2010-06-07 Andreas J. Guelzow <aguelzow@pyrshep.ca>

	* src/expr-name.h (expr_name_validate): drop Sheet argument
	* src/commands.c (cmd_define_name): change the caller here
	* src/expr-name.c (expr_name_validate): and the definition
	  here; use the following two functions
	(expr_name_validate_r1c1): new
	(expr_name_validate_a1): new

2010-06-07 Andreas J. Guelzow <aguelzow@pyrshep.ca>

	* dialog-define-names.c (cb_name_guru_name_edited): the
	  name becomes non-ediatable after it has been set.