contrib/ffmpeg-macosx-intel-mmx.patch: Use Graham Booker's patch which works around the ld64 text relocation bug.

* disable ASM support in libtheora for now (until the authors release a fixed version or Apple a fixed ld)

But it may be useless, because of our mpc demuxer...

Return the p_sys pointer in the httpd_{Handler,File}Delete functions (in case you need it to clean up stuff).

I think it is better that way and confuse less the users.

                           * Fix the "empty value, empty text" key bug.