attempt to clean up yajl detection
changed: ARCH detection if WITH_CPU is given, but not WITH_ARCH
needed for cross compiling
add xbmc target Makefile for building with the cmake-buildsystem
temporary workaround: force pkgconfig on when cross compiling
fix final_message for core_optional_deps
[depends] also steal OpenGL from system libs on linux
fix export-files target when building in source tree
sq to Makefile.cmake-buildsystem