W3 Total Cache .htaccess Tweaks

# BEGIN cache tweaks
<FilesMatch "\.(ico|pdf|flv|jpg|jpeg|png|gif|js|css|swf)$">
	Header set Cache-Control "max-age=2592000, public, must-revalidate"
</FilesMatch>
<FilesMatch "\.(ico|pdf|flv|jpg|jpeg|png|gif|js|css|swf)$">
	Header unset ETag
	Header unset Set-Cookie
</FilesMatch>
# END cache tweaks