* redid the error message handling. g_message now calls message_box or prints
to console depending on whether the no_interface is set or not. gimp-message
is also exported to the PDB as a wrapper to g_message, and libgimp has a new
API: gimp_message. libgimp also overrides g_message for all plugins. Converted
lots of messages in app/* to g_message. Made script-fu a little friendlier.
* updated the regex code from grep 2.2
* said goodbye to the old script-fu logo in script-fu.h
-Yosh
* configure.in: redid libjpeg check to make sure old versions aren't used.
Also #undef PACKAGE and VERSION since some jconfig.h's define it
* updated included regex.[ch] to the one in GNU grep
* plug-ins/script-fu/interp_regex.c: we don't need to kludge around OSF1
anymore, since we use our own regex stuff
-Yosh