Force glib 1.2.x in the maximal coverage test.

maint/mctest

@@ -30,7 +30,8 @@ make distcheck >test1.out 2>test1.err
 
 echo "Checking the configuration with maximal code coverage"
 make distcheck with_screen=mcslang enable_charset=yes with_samba=yes \
-     with_mcfs=yes with_included_gettext=yes >test2.out 2>test2.err
+     with_mcfs=yes with_included_gettext=yes with_glib12=yes \
+     >test2.out 2>test2.err
 
 echo "Checking the configuration with minimal code coverage"
 make distcheck enable_largefile=no enable_nls=no with_vfs=no \