MJPEG Tools Svn

Need to use $CC instead of $_cc in the error message since CC is set at the
top (if not defined as an environment variable).

Applied patch send in by Daniel Gloeckner. Many, many thanks!!

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)