* main.c (main): Move code that sets initial language to

	* main.c (main):  Move code that sets initial language to
	symfile.c.  Fixup places where command files are processed to
	be consistent in setting a default language if none has been
	previously set.
	* symfile.c (set_initial_language):  Add code moved from
	main() that sets an initial default language when a new
	symbol file is read.
	* symfile.c (symbol_file_command):  Call set_initial_language.
	* symtab.c (find_main_psymtab):  Add FIXME comment.