Did not find needed package(s): libsdl1.2-dev. I am trying to install them now.

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Installing 'sdl1' : SDL 1.2.15 with rpi fixes and dispmanx
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converted 'http://downloads.petrockblock.com/retropiebinaries/jessie/rpi2/libsdl1.2debian_1.2.15-11rpi_armhf.deb' (ANSI_X3.4-1968) -> 'http://downloads.petrockblock.com/retropiebinaries/jessie/rpi2/libsdl1.2debian_1.2.15-11rpi_armhf.deb' (UTF-8)
--2015-11-30 20:52:53--  http://downloads.petrockblock.com/retropiebinaries/jessie/rpi2/libsdl1.2debian_1.2.15-11rpi_armhf.deb
Resolving downloads.petrockblock.com (downloads.petrockblock.com)... 46.252.21.198
Connecting to downloads.petrockblock.com (downloads.petrockblock.com)|46.252.21.198|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 156764 (153K) [application/octet-stream]
Saving to: 'libsdl1.2debian_1.2.15-11rpi_armhf.deb'

     0K .......... .......... .......... .......... .......... 32%  166K 1s
    50K .......... .......... .......... .......... .......... 65%  173K 0s
   100K .......... .......... .......... .......... .......... 97%  210K 0s
   150K ...                                                   100% 47.8K=0.9s

2015-11-30 20:52:54 (171 KB/s) - 'libsdl1.2debian_1.2.15-11rpi_armhf.deb' saved [156764/156764]

converted 'http://downloads.petrockblock.com/retropiebinaries/jessie/rpi2/libsdl1.2-dev_1.2.15-11rpi_armhf.deb' (ANSI_X3.4-1968) -> 'http://downloads.petrockblock.com/retropiebinaries/jessie/rpi2/libsdl1.2-dev_1.2.15-11rpi_armhf.deb' (UTF-8)
--2015-11-30 20:52:54--  http://downloads.petrockblock.com/retropiebinaries/jessie/rpi2/libsdl1.2-dev_1.2.15-11rpi_armhf.deb
Resolving downloads.petrockblock.com (downloads.petrockblock.com)... 46.252.21.198
Connecting to downloads.petrockblock.com (downloads.petrockblock.com)|46.252.21.198|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 704322 (688K) [application/octet-stream]
Saving to: 'libsdl1.2-dev_1.2.15-11rpi_armhf.deb'

     0K .......... .......... .......... .......... ..........  7%  151K 4s
    50K .......... .......... .......... .......... .......... 14%  174K 4s
   100K .......... .......... .......... .......... .......... 21%  132K 4s
   150K .......... .......... .......... .......... .......... 29%  119K 3s
   200K .......... .......... .......... .......... .......... 36%  176K 3s
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   600K .......... .......... .......... .......... .......... 94%  284K 0s
   650K .......... .......... .......... .......              100%  158K=5.7s

2015-11-30 20:53:00 (121 KB/s) - 'libsdl1.2-dev_1.2.15-11rpi_armhf.deb' saved [704322/704322]

Selecting previously unselected package libsdl1.2debian:armhf.
(Reading database ... 36618 files and directories currently installed.)
Preparing to unpack libsdl1.2debian_1.2.15-11rpi_armhf.deb ...
Unpacking libsdl1.2debian:armhf (1.2.15-11rpi) ...
Selecting previously unselected package libsdl1.2-dev.
Preparing to unpack libsdl1.2-dev_1.2.15-11rpi_armhf.deb ...
Unpacking libsdl1.2-dev (1.2.15-11rpi) ...
dpkg: dependency problems prevent configuration of libsdl1.2debian:armhf:
 libsdl1.2debian:armhf depends on libts-0.0-0 (>= 1.0); however:
  Package libts-0.0-0 is not installed.


dpkg: error processing package libsdl1.2debian:armhf (--install):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of libsdl1.2-dev:
 libsdl1.2-dev depends on libsdl1.2debian (= 1.2.15-11rpi); however:
  Package libsdl1.2debian:armhf is not configured yet.

dpkg: error processing package libsdl1.2-dev (--install):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 libsdl1.2debian:armhf
 libsdl1.2-dev
Reading package lists...
Building dependency tree...
Reading state information...
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
  libasyncns0 libavahi-client-dev libavahi-common-dev libbluray1 libcaca-dev
  libcaca0 libdbus-1-dev libdirectfb-1.2-9 libdirectfb-dev libdirectfb-extra
  libdrm-dev libdrm-exynos1 libdrm-freedreno1 libdrm-nouveau2 libdrm-omap1
  libdrm-radeon1 libdrm2 libelfg0 libfreetype6-dev libgl1-mesa-dev
  libgl1-mesa-glx libglapi-mesa libglib2.0-bin libglib2.0-dev libglu1-mesa
  libglu1-mesa-dev libjpeg-dev libjpeg62-turbo-dev libjson-c2 libopenal-data
  libopenal1 libpcre3-dev libpthread-stubs0-dev libpulse-dev
  libpulse-mainloop-glib0 libpulse0 libslang2-dev libsndfile1 libvorbisfile3
  libx11-dev libx11-xcb-dev libx11-xcb1 libxau-dev libxcb-dri2-0
  libxcb-dri2-0-dev libxcb-dri3-0 libxcb-dri3-dev libxcb-glx0 libxcb-glx0-dev
  libxcb-present-dev libxcb-present0 libxcb-randr0 libxcb-randr0-dev
  libxcb-render0 libxcb-render0-dev libxcb-shape0 libxcb-shape0-dev
  libxcb-sync-dev libxcb-sync1 libxcb-xfixes0 libxcb-xfixes0-dev libxcb1-dev
  libxdamage-dev libxdamage1 libxdmcp-dev libxext-dev libxfixes-dev
  libxshmfence-dev libxshmfence1 libxtst6 libxxf86vm-dev mesa-common-dev
  rbp2-image-4.2.3-2-osmc x11proto-core-dev x11proto-damage-dev
  x11proto-dri2-dev x11proto-fixes-dev x11proto-gl-dev x11proto-input-dev
  x11proto-kb-dev x11proto-xext-dev x11proto-xf86vidmode-dev
  xorg-sgml-doctools xtrans-dev
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED:
  libsdl1.2-dev libsdl1.2debian
0 upgraded, 0 newly installed, 2 to remove and 1 not upgraded.
2 not fully installed or removed.
After this operation, 2900 kB disk space will be freed.
(Reading database ... 37059 files and directories currently installed.)
Removing libsdl1.2-dev (1.2.15-11rpi) ...
Removing libsdl1.2debian:armhf (1.2.15-11rpi) ...
Processing triggers for libc-bin (2.19-18+deb8u1) ...
dpkg: warning: package not in database at line 1: libsdl1.2-dev
dpkg: warning: found unknown packages; this might mean the available database
is outdated, and needs to be updated through a frontend method
Reading package lists...
Building dependency tree...
Reading state information...
The following packages were automatically installed and are no longer required:
  libasyncns0 libavahi-client-dev libavahi-common-dev libbluray1 libcaca-dev
  libcaca0 libdbus-1-dev libdirectfb-1.2-9 libdirectfb-dev libdirectfb-extra
  libdrm-dev libdrm-exynos1 libdrm-freedreno1 libdrm-nouveau2 libdrm-omap1
  libdrm-radeon1 libdrm2 libelfg0 libfreetype6-dev libgl1-mesa-dev
  libgl1-mesa-glx libglapi-mesa libglib2.0-bin libglib2.0-dev libglu1-mesa
  libglu1-mesa-dev libjpeg-dev libjpeg62-turbo-dev libjson-c2 libopenal-data
  libopenal1 libpcre3-dev libpthread-stubs0-dev libpulse-dev
  libpulse-mainloop-glib0 libpulse0 libslang2-dev libsndfile1 libvorbisfile3
  libx11-dev libx11-xcb-dev libx11-xcb1 libxau-dev libxcb-dri2-0
  libxcb-dri2-0-dev libxcb-dri3-0 libxcb-dri3-dev libxcb-glx0 libxcb-glx0-dev
  libxcb-present-dev libxcb-present0 libxcb-randr0 libxcb-randr0-dev
  libxcb-render0 libxcb-render0-dev libxcb-shape0 libxcb-shape0-dev
  libxcb-sync-dev libxcb-sync1 libxcb-xfixes0 libxcb-xfixes0-dev libxcb1-dev
  libxdamage-dev libxdamage1 libxdmcp-dev libxext-dev libxfixes-dev
  libxshmfence-dev libxshmfence1 libxtst6 libxxf86vm-dev mesa-common-dev
  rbp2-image-4.2.3-2-osmc x11proto-core-dev x11proto-damage-dev
  x11proto-dri2-dev x11proto-fixes-dev x11proto-gl-dev x11proto-input-dev
  x11proto-kb-dev x11proto-xext-dev x11proto-xf86vidmode-dev
  xorg-sgml-doctools xtrans-dev
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
Successfully installed package(s): .