BOINC 'x64 Linux about' patch

--- a/clientgui/DlgAbout.cpp	2012-12-16 23:24:40.321028004 +0000
+++ b/clientgui/DlgAbout.cpp	2012-12-16 23:23:02.431787921 +0000
@@ -82,6 +82,8 @@
     m_strVersion.Printf(wxT("%s (x64)"), wxT(BOINC_VERSION_STRING));
 #elif defined(__ppc__)
     m_strVersion.Printf(wxT("%s (PowerPC)"), wxT(BOINC_VERSION_STRING));
+#elif defined(__linux__) && defined(__x86_64__)
+    m_strVersion.Printf(wxT("%s (x64)"), wxT(BOINC_VERSION_STRING));
 #else
     m_strVersion.Printf(wxT("%s (x86)"), wxT(BOINC_VERSION_STRING));
 #endif