Make init_type/arch_type take a size in bits

Make init_type/arch_type take a size in bits

This changes the interfaces to init_type and arch_type to take the
type length in bits as input (instead of as bytes).  The routines
assert that the length is a multiple of TARGET_CHAR_BIT.

For consistency, arch_flags_type is changed likewise, so that now
all type creation interfaces always use length in bits.

All callers are updated in the straightforward manner.

The assert actually found a bug in read_range_type, where the
init_integer_type routine was called with a wrong argument (probably
a bug introduced with the conversion to use init_integer_type).

gdb/ChangeLog
2017-09-27  Ulrich Weigand  <uweigand@de.ibm.com>

	* gdbtypes.c (init_type): Change incoming argument from
	length-in-bytes to length-in-bits.  Assert length is a
	multiple of TARGET_CHAR_BITS.
	(arch_type, arch_flags_type): Likewise.
	(init_integer_type): Update call to init_type.
	(init_character_type): Likewise.
	(init_boolean_type): Likewise.
	(init_float_type): Likewise.
	(init_decfloat_type): Likewise.
	(init_complex_type): Likewise.
	(init_pointer_type): Likewise.
	(objfile_type): Likewise.
	(arch_integer_type): Update call to arch_type.
	(arch_character_type): Likewise.
	(arch_boolean_type): Likewise.
	(arch_float_type): Likewise.
	(arch_decfloat_type): Likewise.
	(arch_complex_type): Likewise.
	(arch_pointer_type): Likewise.
	(gdbtypes_post_init): Likewise.

	* dwarf2read.c (dwarf2_init_float_type): Update call to init_type.
	(read_base_type): Likewise.
	* mdebugread.c (basic_type): Likewise.
	* stabsread.c (dbx_init_float_type): Likewise.
	(rs6000_builtin_type): Likewise.
	(read_range_type): Likewise.  Also, fix call to init_integer_type
	with erroneous length argument.

	* ada-lang.c (ada_language_arch_info): Update call to arch_type.
	* d-lang.c (build_d_types): Likewise.
	* f-lang.c (build_fortran_types): Likewise.
	* go-lang.c (build_go_types): Likewise.
	* opencl-lang.c (build_opencl_types): Likewise.
	* jit.c (finalize_symtab): Likewise.
	* gnu-v3-abi.c (build_gdb_vtable_type): Likewise.
	(build_std_type_info_type): Likewise.
	* target-descriptions.c (tdesc_gdb_type): Likewise.  Also,
	update call to arch_flags_type.

	* linux-tdep.c (linux_get_siginfo_type_with_fields): Update call to
	arch_type.
	* fbsd-tdep.c (fbsd_get_siginfo_type): Likewise.
	* windows-tdep.c (windows_get_tlb_type): Likewise.

	* avr-tdep.c (avr_gdbarch_init): Update call to arch_type.
	* ft32-tdep.c (ft32_gdbarch_init): Likewise.
	* m32c-tdep.c (make_types): Likewise.
	* rl78-tdep.c (rl78_gdbarch_init): Likewise.
	(rl78_psw_type): Update call to arch_flags_type.
	* m68k-tdep.c (m68k_ps_type): Update call to arch_flags_type.
	* rx-tdep.c (rx_psw_type): Likewise.
	(rx_fpsw_type): Likewise.
	* sparc-tdep.c (sparc_psr_type): Likewise.
	(sparc_fsr_type): Likewise.
	* sparc64-tdep.c (sparc64_pstate_type): Likewise.
	(sparc64_ccr_type): Likewise.
	(sparc64_fsr_type): Likewise.
	(sparc64_fprs_type): Likewise.