MJPEG Tools Svn

Some changes for the next release.
Additions to the Doku

added the configuration for the new Quad Core AMD, named barcelona

Newer Version for the next release

Support for new CPUs.

Fix that makes it possible to compile mplex in mingw32

Trial fix: stop sampling frames at Q floor (where Actual bits *expected* to be
< Target bits) to compute mean Target/Actual ratio after pass2
reencoding.
Tidying: remove some redundant inclusion of config.h

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)