bfd/

	* elf32-xtensa.c (elf_xtensa_special_sections): Add .xtensa.info.
gas/
	* config/tc-xtensa.c (XSHAL_ABI): Add default definition.
	(directive_state): Disable scheduling by default.
	(xtensa_add_config_info): New.
	(xtensa_end): Call xtensa_add_config_info.
gas/testsuite/
	* gas/elf/section2.e-xtensa: New file.
	* gas/elf/elf.exp: Use it.
include/
	* xtensa-config.h (XSHAL_ABI): New.
	(XTHAL_ABI_WINDOWED, XTHAL_ABI_CALL0): New.
ld/
	* emultempl/xtensaelf.em (XSHAL_ABI): Add default definition.
	(replace_insn_sec_with_prop_sec): Use bfd_make_section_with_flags.
	Delete redundant code to set sections flags and alignment.
	(xt_config_info_unpack_and_check, check_xtensa_info): New.
	(elf_xtensa_after_open): Iterate over input statements instead of
	link_info.input_bfds.
	(elf_xtensa_before_allocation): Likewise.  Call check_xtensa_info for
	each input, and write a new .xtensa.info section in the output.