* defs.h (CC_HAS_LONG_LONG): Set up to define CC_HAS_LONG_LONG

	* defs.h (CC_HAS_LONG_LONG):  Set up to define CC_HAS_LONG_LONG
	when compiling with gcc, but disable it for now.  See comment.
	* defs.h (LONGEST):  Define as either "long" or "long long"
	based on CC_HAS_LONG_LONG.
	* defs.h (longest_to_int):  Use CC_HAS_LONG_LONG to control
	how longest_to_int is defined.
	* c-valprint.c (c_val_print):  Call print_longest.
	* expprint.c (dump_expression):  Use PRINTF_HAS_LONG_LONG
	instead of LONG_LONG.
	* {printcmd.c, gdbtypes.h} (LONG_LONG):  Replace usages with
	CC_HAS_LONG_LONG.
	* printcmd.c (print_scalar_formatted):  Call print_longest
	and let it figure out what to do for PRINTF_HAS_LONG_LONG.
	* typeprint.c (print_type_scalar):  Call print_longest and let
	it figure out what to do for PRINTF_HAS_LONG_LONG.
	* valprint.c (val_print_type_code_int):  Call print_longest
	and let it figure out what to do for PRINTF_HAS_LONG_LONG.
	* stabsread.c (LONG_LONG):  Replace usages with CC_HAS_LONG_LONG.
	* value.h (struct value):  Replace usage of LONG_LONG with
	CC_HAS_LONG_LONG.
	* value.h (print_longest):  Add prototype.
	* values.c (LONG_LONG):  Replace usages with CC_HAS_LONG_LONG.
	* values.c (unpack_double):  Collapse code that was unnecessarily
	dependent on CC_HAS_LONG_LONG.  Use LONGEST instead of direct types.
	* values.c (value_from_longest):  Remove dependency on
	CC_HAS_LONG_LONG and just use LONGEST.
	* solib.c (solib_map_sections):  Use bfd_get_filename
	to access filename field.
	* solib.c (clear_solib):  Save filename and free it later, after
	bfd_close, since bfd_close may reference it.  Use bfd_get_filename
	to access the field.
	* config/convex/xm-convex.h (LONG_LONG):  Replace with
	CC_HAS_LONG_LONG.  Add define for PRINTF_HAS_LONG_LONG.
	* doc/gdbint.texinfo (LONG_LONG):  Replace with CC_HAS_LONG_LONG.
	Add PRINTF_HAS_LONG_LONG references.