PR other/54620
	PR target/39064
	* md5.h (md5_uintptr, md5_uint32): Define as uintptr_t/uint32_t if
	stdint.h and sys/types.h headers are present.
	* sha1.h (sha1_uintptr, sha1_uint32): Likewise.
	* dwarf2read.c (read_namespace_type): Remove cast.
	(read_typedef): Likewise.
	* dwarf2read.c (compute_delayed_physnames, read_call_site_scope)
	(read_structure_type, read_enumeration_type): Remove cast.