Linux: preload ffmpeg in the zygote.

third_party/ffmpeg/ffmpeg.gyp

Index: third_party/ffmpeg/ffmpeg.gyp
diff --git a/third_party/ffmpeg/ffmpeg.gyp b/third_party/ffmpeg/ffmpeg.gyp
index f035165194ced32dd153ebed6ad98066f7333acb..458328fea3feca49f7cfc170be65405cffdb6c18 100755
--- a/third_party/ffmpeg/ffmpeg.gyp
+++ b/third_party/ffmpeg/ffmpeg.gyp
@@ -21,9 +21,11 @@
       'variables': {
         'generate_stubs_script': 'generate_stubs.py',
         'sig_files': [
+          # Note that these must be listed in dependency order.
+          # (i.e. if A depends on B, then B must be listed before A.)
+          'avutil-50.sigs',

[awong, 2009/08/04 01:17:10]

what?  really?  What happens if it's not?  I didn't think it should matter...

[agl, 2009/08/04 01:18:46]

It doesn't load otherwise. avcodec depends on avutil. If avutil isn't loaded
first then libc will try to find avutil using the order listed in the manpage.
Since I don't have an system avutil which works, it fails to load avcodec.

           'avcodec-52.sigs',
           'avformat-52.sigs',
-          'avutil-50.sigs',
         ],
         'extra_header': 'ffmpeg_stub_headers.fragment',
       },