re PR target/24348 (bootstrap failure building libgcc)

	PR target/24348
	* config.gcc (hppa*-*-hpux*): Add pa/t-slibgcc-elf-ver to tmake config
	when not using sjlj exceptions.
	* config/pa/pa64-hpux.h (LIB_SPEC): Add -lpthread in static links.
	* config/pa/pa-hpux11.h (LIB_SPEC): Likewise.
	* config/pa/som.h (ASM_PREFERRED_EH_DATA_FORMAT): Delete define.
	* config/pa/linux-unwind.h (pa32_fallback_frame_state): Use
	DWARF_ALT_FRAME_RETURN_COLUMN instead of column 0 as return column.
	* config/pa/pa-hpux.h (MD_UNWIND_SUPPORT): New define.
	* config/pa/pa-linux.h (INCOMING_RETURN_ADDR_RTX,
	DWARF_FRAME_RETURN_COLUMN, ASM_PREFERRED_EH_DATA_FORMAT,
	ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX): Delete defines.
	* config/pa/pa.h (ARG_POINTER_CFA_OFFSET): Delete.
	(FRAME_POINTER_CFA_OFFSET, INCOMING_RETURN_ADDR_RTX,
	DWARF_FRAME_RETURN_COLUMN, DWARF_ALT_FRAME_RETURN_COLUMN,
	ASM_PREFERRED_EH_DATA_FORMAT, ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX): New
	defines.
	* config/pa/hpux-unwind.h: New file.

	* testsuite/gcc.dg/cleanup-8.c: Enable test on hppa*-*-hpux*.
	* testsuite/gcc.dg/cleanup-9.c: Likewise.
	* testsuite/gcc.dg/cleanup-10.c: Likewise.
	* testsuite/gcc.dg/cleanup-11.c: Likewise.

From-SVN: r107157