gdb/

gdb/
	* gdbtypes.c (check_typedef): New comment on type length.
	* value.c (allocate_value_lazy): Remove the unused atype variable.  New
	comment on type length.
	(value_primitive_field): Keep the original TYPE value, new comment.

gdb/testsuite/
	* gdb.mi/var-cmd.c (do_bitfield_tests): Change "V.sharable" type to
	"uint_for_mi_testing".