gmap40.m: Deprecate function. Function is specifically for gnuplot-4.0 support, but Octave already requires version 4.2.5. * scripts/deprecated/gmap40.m: Moved from image/ directory. Add warning when run. Add deprecation notice to docstring. * scripts/deprecated/module.mk: Add gmap40.m to build system. * scripts/image/module.mk: Remove gmap40.m from image dir build system. * scripts/image/gmap40.m: Moved to deprecated/ directory.

--- a/scripts/deprecated/module.mk	Sun May 03 09:36:20 2015 -0700
+++ b/scripts/deprecated/module.mk	Sun May 03 12:58:42 2015 -0700
@@ -10,6 +10,7 @@
   deprecated/fmod.m \
   deprecated/fnmatch.m \
   deprecated/gen_doc_cache.m \
+  deprecated/gmap40.m \
   deprecated/interp1q.m \
   deprecated/isequalwithequalnans.m \
   deprecated/isstr.m \