changed --enable-debug option to non destructive behaviour according to http://www.gnu.org/software/autoconf/manual/autoconf.html#index-CFLAGS-80
changed --enable-debug option to non destructive behaviour according to
http://www.gnu.org/software/autoconf/manual/autoconf.html#index-CFLAGS-80

dgarnier/gtkextra,dgarnier/gtkextra,dgarnier/gtkextra,dgarnier/gtkextra