* plug-ins/common/mkgen.pl
* plug-ins/common/Makefile.am: added a pattern rule to install
single plugins
* all plugin Makefiles: use $libexecdir instead of $pluginlibdir
so we get installed on make install-exec
* plug-ins/gap/gap_filter_iterators.c: removed old Colorify_iter_ALT
reference
-Yosh
* configure.in: use the sinclude bit again, since it works in
automake 1.4. Generate the Makefile in the embed dir too
* app/gimp.sym: new file, list the symbols we want export to
modules here
* app/Makefile.am: add -export-symbols to LDFLAGS
* plug-ins/Makefile.am: use make variable expansion instead of
direct substitution for optional plug-in dirs. E.g., now one can
do "make GIMP_PERL=" to skip the perl plug-in dir during build
without rerunning configure
* plug-ins/rcm/Makefile.am: add header files to SOURCES
-Yosh
Manish Singh