MJPEG Tools Svn

Baaam! Fixed-up the "ifdef()" madness introduced with last commit (this
time: proper quoting). Also went and ifdef'ed AM_PATH_GTK and AM_PATH_SDL.

Revert unsigned long changes.

configure.in:
o wrapped an ifdef() around AM_PATH_MOVTAR in configure.in
(so that if you don't have movtar and don't want movtar,
you don't need it.)
o detect if __progname is defined on system.
mjpeg_logging.c/h:
o log output now includes an identifier, defaulting to the name of the
executable (or "???" if __progname doesn't exist).
o added function to set the identifier (if program wants to explicitly).

Moved improved sample aspect ratio guessing to y4m library from lav2yuv.
Minor tweaks in lav2yuv lav_common so that a correct sample aspect ratio
is generated.

merge change of MAIN branch to revision 1.80

merge change of MAIN branch to revision 1.16

Style changed - make it look better

Fixed inconsistent MMX SAD function types.

Updates from Jeff, Emmanuel

Fix a warning sent to stdout.