re PR target/56975 (dllimport broken on i686-pc-cygwin)

re PR target/56975 (dllimport broken on i686-pc-cygwin)

2013-05-13  Kai Tietz  <ktietz@redhat.com>

	PR target/56975
	* config/i386/cygming.h (TARGET_PECOFF): Define as true.
	* config/i386/i386.h (TARGET_PECOFF): Define by default
	as false.
	(PIC_OFFSET_TABLE_REGNUM): Use TARGET_PECOFF.
	* config/i386/i386.c (ix86_option_override_internal):
	Likewise.
	(ix86_expand_prologue): Likewise.
	(ix86_expand_split_stack_prologue): Likewise.
	(legitimate_pic_address_disp_p): Likewise.
	(legitimize_pic_address): Likewise.
	(legitimize_tls_address): Likewise.
	(legitimize_pe_coff_symbol): Likewise.
	(output_pic_addr_const): Likewise.
	(construct_plt_address): Likewise.
	(ix86_expand_call): Likewise.
	(x86_output_mi_thunk): Likewise.
	(x86_function_profiler): Likewise.

From-SVN: r198852