MJPEG Tools Svn

fix building of mjpegtools with gcc-4.3

http://bugs.gentoo.org/attachment.cgi?id=145622
it was written by Ryan Hill

Also found in the mjpegtools tracker:
https://sourceforge.net/tracker/?func=detail&atid=305776&aid=1947059&group_id=5776

OSX 10.5 puts libpng in a really strange place and to find it we need
$(LIBPNG_LIBS_ and (LIBPNG_CFLAGS)

Fix PTHREAD_LIBS usage - needs to be @PTHREAD_LIBS@ rather than $PTHREAD_LIBS

fix warnings patch from fabian greffrath

Missing '}'

Forgot the last edit ;)

Patch from Fabian Greffrath for "build with LDFLAGS=-Wl, --as-needed". Not
needed on most systems but it doesn't appear to harm anything on OSX

Use extended family info for newer cpus (4 bit field could only go to 15)

Couple include files to get prototypes for strcmp and usleep

Fixed: mpeg2enc output bit rate exceeding maximum rate due to faulty
algorithm for self-tuning pass-2 reencoding. New algorithm implemented
that won't have this problem
Fixed: mpeg2enc use of uninitialised variable in pass-2 rate controller.
Fixed: mplex incorrect substream id for multiplexing for dvd authoring.