* include/sys/cygwin.h (struct per_process): Add posix_memalign.  Reduce
	size of unused2 accordingly.
	* include/cygwin/version.h (CYGWIN_VERSION_API_MINOR): Bump.
	* lib/_cygwin_crt0_common.cc (_cygwin_crt0_common): Initialize
	u->posix_memalign with address of posix_memalign.
	* malloc_wrapper.cc (posix_memalign): Call user-provided posix_memalign
	rather than just returning ENOSYS.
	* globals.cc (__cygwin_user_data): Initialize posix_memalign member.
	* new-features.xml (ov-new1.7.24): Add new section.  Mention
	posix_memalign override.
	PR ld/15787
	* elf32-arm.c (elf32_arm_final_link_relocate): Use origin of output
	segment containing the relocating symbol instead of assuming 0 for
	sb group relocations.

	* ld-arm/group-relocs-ldr-bad.s: Redefine bar into foo section
	beyond 16 bit offset width.
	* ld-arm/group-relocs-ldrs-bad.s: Likewise.
	* ld-arm/group-relocs-ldr-bad.d: Adjust expected result.
	* ld-arm/group-relocs-ldrs-bad.d: Likewise.
	* ld-arm/group-relocs.s: Add comments.  Move symbols used for sb
	group relocations into .data section.  Drop section zero.  Use pc/r0
	as base register when pc/sb group relocations are used.
	* ld-arm/group-relocs.d: Adjust expected result.
	* ld-arm/group-relocs-alu-bad-2.d: New test for sb group relocation.
	* ld-arm/group-relocs-ldc-bad-2.d: Likewise.
	* ld-arm/group-relocs-ldr-bad-2.d: New test for pc group relocation.
	* ld-arm/group-relocs-ldrs-bad-2.d: Likewise.
	* ld-arm/unresolved-2.d: Add sb relocation failure test.
	* ld-arm/group-relocs-alu-bad-2.s: New test source.
	* ld-arm/group-relocs-ldr-bad-2.s: Likewise.
	* ld-arm/group-relocs-ldrs-bad-2.s: Likewise.
	* ld-arm/group-relocs-ldc-bad-2.s: Likewise.
	* ld-arm/unresolved-2.s: Likewise.
	* ld-arm/arm-elf.exp: For group-relocs, drop section zero start
	definition.  Run the new tests.
use the libiberty crc code

gdb has a copy of some CRC code that also appears in libiberty.
This patch just removes the local copy.

You may notice that "crc32" returns unsigned long but "xcrc32" returns
unsigned int.  However, this does not matter, because crc32 actually
does all its operations in unsigned int type, and only the return
result is widened.  So, the difference does not matter.

	* remote.c (crc32_table, crc32): Remove.
	(remote_verify_memory): Use xcrc32.
make remote_protocol_features "const"

This is a trivial patch to make remote_protocol_features "const".

	* remote.c (remote_protocol_features): Now const.
Add new_remote_state

Add new_remote_state and change remote_state to be a pointer.  This is
a preparatory patch for a later series.  It could perhaps be omitted,
but new_remote_state also does some initialization that was previously
done for the globals.

	* remote.c (remote_state): Now a pointer.
	(get_remote_state_raw): Update.
	(new_remote_state): New function.
	(_initialize_remote): Use new_remote_state.
push remote_desc into struct remote_state

This moves the "remote_desc" global into remote_state.

	* remote.c (struct remote_state) <remote_desc>: New field.
	(remote_desc): Remove.
	(remote_threads_info, remote_threads_extra_info, remote_close)
	(send_interrupt_sequence, remote_start_remote, remote_open_1)
	(readchar, remote_xfer_partial, remote_rcmd, packet_command)
	(remote_hostio_send_command, remote_file_put, remote_file_get)
	(remote_file_delete, remote_can_async_p, remote_is_async_p)
	(remote_async, remote_new_objfile, set_range_stepping): Update.
push general_thread and continue_thread into struct remote_state

This moves the globals general_thread and continue_thread into
remote_state.

	* remote.c (struct remote_state) <general_thread, continue_thread>:
	New fields.
	(general_thread, continue_thread): Remove.
	(record_currthread, set_thread, set_general_process)
	(remote_open_1, extended_remote_attach_1, remote_wait_as)
	(extended_remote_mourn_1): Update.
push remote_traceframe_number into struct remote_state

This moves the global remote_traceframe_number into remote_state.

	* remote.c (struct remote_state) <remote_traceframe_number>:
	New field.
	(remote_traceframe_number): Remove.
	(new_remote_state, remote_open_1, set_remote_traceframe)
	(remote_trace_find): Update.
push last_pass_packet into struct remote_state

This moves the global last_pass_packet into remote_state.

	* remote.c (struct remote_state) <last_pass_packet>:
	New field.
	(last_pass_packet): Remove.
	(remote_pass_signals, remote_open_1): Update.
push last_program_signals_packet into struct remote_state

This moves the global last_program_signals_packet into remote_state.

	* remote.c (struct remote_state) <last_program_signals_packet>:
	New field.
	(last_program_signals_packet): Remove.
	(remote_program_signals, remote_open_1): Update.
push last_sent_signal into struct remote_state

This moves the global last_sent_signal into remote_state.

	* remote.c (struct remote_state) <last_sent_signal>:
	New field.
	(last_sent_signal): Remove.
	(new_remote_state, remote_resume, remote_wait_as): Update.
push last_sent_step into struct remote_state

This moves the global last_sent_step into remote_state.

	* remote.c (struct remote_state) <last_sent_step>:
	New field.
	(last_sent_step): Remove.
	(remote_resume, remote_wait_as): Update.
move some statics from remote_read_qxfer into struct remote_state

This moves a few static variables out of remote_read_qxfer and into
remote_state.

	* remote.c (struct remote_state) <finished_object,
	finished_annex, finished_offset>: New fields.
	(remote_read_qxfer): Use remote_state fields; remove static
	variables.
move use_threadinfo_query and use_threadextra_query into struct remote_state

This moves the use_threadextra_query and use_threadinfo_query globals
into remote_state.

	* remote.c (struct remote_state) <use_threadinfo_query,
	use_threadextra_query>: New fields.
	(remote_threads_info, remote_threads_extra_info)
	(remote_open_1): Update.
move sizeof_pkt into remote_trace_find

The global sizeof_pkt is only used in remote_trace_find, like so:

  reply = remote_get_noisy_reply (&(rs->buf), &sizeof_pkt);

I think in this situation it is more correct to use the recorded size
of the buffer.  Otherwise it seems that some skew could result.

	* remote.c (sizeof_pkt): Remove.
	(remote_trace_find): Use rs->buf_size, not sizeof_pkt.
move async_client_callback and async_client_context into remote_state

This moves async_client_callback and async_client_context into
remote_state.

	* remote.c (struct remote_state) <async_client_callback,
	async_client_context>: New fields.
	(async_client_callback, async_client_context): Remove.
	(remote_async_serial_handler, remote_async): Update.
move remote_stopped_by_watchpoint_p and remote_watch_data_address into remote_state

This moves the globals remote_stopped_by_watchpoint_p and
remote_watch_data_address into remote_state.

	* remote.c (struct remote_state) <remote_stopped_by_watchpoint_p,
	remote_watch_data_address>: New fields.
	(remote_stopped_by_watchpoint_p, remote_watch_data_address): Remove.
	(process_stop_reply, remote_wait_as)
	(remote_check_watch_resources, remote_stopped_data_address): Update.
move some static thread state into remote_state

This moves a few static variables from thread-info functions into
remote_state.  Pedro said on irc that these functions implement the
ancient thread-discovery method and that he wouldn't be surprised if
they had rotted; nevertheless it seems safer to me to make them
explicitly per-remote.

This necessitated moving a couple of macros and a typedef earlier in
the file.

	* remote.c (struct remote_state) <echo_nextthread, nextthread,
	resultthreadlist>: New fields.
	(OPAQUETHREADBYTES, threadref, MAXTHREADLISTRESULTS): Move earlier.
	(remote_get_threadlist, remote_threadlist_iterator): Use
	new fields.  Remove static variables.
	* boards/fission.exp: Add -fdebug-types-section to debug_flags.