gdb/fortran: Expand the set of types that support (kind=N)

gdb/fortran: Expand the set of types that support (kind=N)

Expand the number of types that can be adjusted with a (kind=N) type
extension.

gdb/ChangeLog:

	* f-exp.y (convert_to_kind_type): Handle more type kinds.

gdb/testsuite/ChangeLog:

	* gdb.fortran/type-kinds.exp (test_cast_1_to_type_kind): New
	function.
	(test_basic_parsing_of_type_kinds): Expand types tested.
	(test_parsing_invalid_type_kinds): New function.