* arm-tdep.c (thumb_expand_immediate): New function.

	* arm-tdep.c (thumb_expand_immediate): New function.
	(thumb_instruction_changes_pc): Likewise.
	(thumb2_instruction_changes_pc): Likewise.
	(thumb_analyze_prologue): Handle 32-bit Thumb instructions during
	prologue parsing.  Improved support for optimized code.
	(thumb_scan_prologue): Do not reply on line-number information,
	use same heuristics as arm_scan_prologue insead.
	(skip_prologue_function): Accept functions
	"__tls_get_addr" and "__aeabi_read_tp".