[flac-dev] /usr/include/FLAC no longer searched for headers

[Miroslav Lichvar]

I've received a bugreport that vlc doesn't compile with the current
flac. The problem seems to be that it includes "stream_decoder.h"
instead of "FLAC/stream_decoder.h". This no longer works due to the
commit b76d4f (it was discussed on this list).

I'm not sure how many clients are relying on the directory to be
searched by default, but I think it might be worth mentioning in the
changelog.

-- 
Miroslav Lichvar