- When yajl is installed, the build system manages to find it even
under superenv, so explicitly disable this option unless requested
- Future-proof finding faad2 in non-/usr/local installs
- Fix libshout deps
libshout fails sha1 check when trying to install it.
- Change to the download url given on their webpage (no .us.)
- Fix the sha1 hash. Both old and new urls have this hash.
- Compiles well using clang and superenv.
ClosesHomebrew/homebrew#14823.
Signed-off-by: Adam Vandenberg <flangy@gmail.com>