This option tells linker to look for local libraries first. If you have
a shared livavcodec/libavformat in the library path and try to build a
static build, the linker will find the shared library first and link
with it.
patch by (Roine Gustafsson <roine users.sourceforge net>)


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@3793 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b