* configure.in: Define EVO_MARSHAL_RULE, which creates glib
marshaller .c and .h files that don't cause gcc warnings
* marshal.mk: The Makefile fragment used by EVO_MARSHAL_RULE.
(Can't include newlines in an AC_SUBST, so we have to use
AC_SUBST_FILE)
* Makefile.am (EXTRA_DIST): add marshal.mk
svn path=/trunk/; revision=21910
