* subsegs.h (struct frchain): Add frch_cfi_data field.

	* subsegs.h (struct frchain): Add frch_cfi_data field.
	* dw2gencfi.c: Include subsegs.h.
	(cur_fde_data, last_address, cur_cfa_offset, cfa_save_stack): Removed.
	(struct frch_cfi_data): New type.
	(unused_cfi_data): New variable.
	(alloc_fde_entry): Move cur_fde_data, last_address, cur_cfa_offset
	and cfa_save_stack static vars into a structure pointed from
	each frchain.
	(alloc_cfi_insn_data, cfi_new_fde, cfi_end_fde, cfi_set_return_column,
	cfi_add_advance_loc, cfi_add_CFA_def_cfa, cfi_add_CFA_def_cfa_offset,
	cfi_add_CFA_remember_state, cfi_add_CFA_restore_state, dot_cfi,
	dot_cfi_escape, dot_cfi_startproc, dot_cfi_endproc, cfi_finish):
	Likewise.

	* gas/cfi/cfi-common-5.d: New test.
	* gas/cfi/cfi-common-5.s: New.
	* gas/cfi/cfi.exp: Add cfi-common-5 test.