* src/parse.y, src/eval.c, src/dict.c, src/structs.h: Add an optional
	  list of extra_dict parameters to function definition.  In this
	  case the subst dance never happens and those variables are added to
	  extra dict at function definition time.

	* lib/*/*.gel: Use local where appropriate and the [] extra dict
	  definition where appropriate

	* src/testscope.gel, src/geniustests.txt: update test suite

	* src/geniustest.pl: fix colors