Reapply: List inferiors/threads/pspaces in ascending order

Reapply: List inferiors/threads/pspaces in ascending order

[This reapplies a change that was accidentally reverted with c0ecb95f3d.]

Before:
  (gdb) info threads
    Id   Target Id         Frame
    3    Thread 0x7ffff77c3700 (LWP 29035) callme () at foo.c:30
    2    Thread 0x7ffff7fc4700 (LWP 29034) 0x000000000040087b in child_function_2 (arg=0x0) at foo.c:60
  * 1    Thread 0x7ffff7fc5740 (LWP 29030) 0x0000003b37209237 in pthread_join (threadid=140737353893632, thread_return=0x0) at pthread_join.c:92

After:
  (gdb) info threads
    Id   Target Id         Frame
  * 1    Thread 0x7ffff7fc5740 (LWP 29030) 0x0000003b37209237 in pthread_join (threadid=140737353893632, thread_return=0x0) at pthread_join.c:92
    2    Thread 0x7ffff7fc4700 (LWP 29034) 0x000000000040087b in child_function_2 (arg=0x0) at foo.c:60
    3    Thread 0x7ffff77c3700 (LWP 29035) callme () at foo.c:30

gdb/doc/ChangeLog:
2015-11-24  Pedro Alves  <palves@redhat.com>

	PR 17539
	* gdb.texinfo (Inferiors and Programs): Adjust "maint info
	program-spaces" example to ascending order listing.
	(Threads): Adjust "info threads" example to ascending order
	listing.
	(Forks): Adjust "info inferiors" example to ascending order
	listing.

gdb/ChangeLog:
2015-11-24  Pedro Alves  <palves@redhat.com>

	PR 17539
	* inferior.c (add_inferior_silent): Append the new inferior to the
	end of the list.
	* progspace.c (add_program_space): Append the new pspace to the
	end of the list.
	* thread.c (new_thread): Append the new thread to the end of the
	list.

gdb/testsuite/ChangeLog:
2015-11-24  Pedro Alves  <palves@redhat.com>

	PR 17539
	* gdb.base/foll-exec-mode.exp: Adjust to GDB listing inferiors and
	threads in ascending order.
	* gdb.base/foll-fork.exp: Likewise.
	* gdb.base/foll-vfork.exp: Likewise.
	* gdb.base/multi-forks.exp: Likewise.
	* gdb.mi/mi-nonstop.exp: Likewise.
	* gdb.mi/mi-nsintrall.exp: Likewise.
	* gdb.multi/base.exp: Likewise.
	* gdb.multi/multi-arch.exp: Likewise.
	* gdb.python/py-inferior.exp: Likewise.
	* gdb.threads/break-while-running.exp: Likewise.
	* gdb.threads/execl.exp: Likewise.
	* gdb.threads/gcore-thread.exp: Likewise.
	* gdb.threads/info-threads-cur-sal.exp: Likewise.
	* gdb.threads/kill.exp: Likewise.
	* gdb.threads/linux-dp.exp: Likewise.
	* gdb.threads/multiple-step-overs.exp: Likewise.
	* gdb.threads/next-bp-other-thread.exp: Likewise.
	* gdb.threads/step-bg-decr-pc-switch-thread.exp: Likewise.
	* gdb.threads/step-over-lands-on-breakpoint.exp: Likewise.
	* gdb.threads/step-over-trips-on-watchpoint.exp: Likewise.
	* gdb.threads/thread-find.exp: Likewise.
	* gdb.threads/tls.exp: Likewise.
	* lib/mi-support.exp (mi_reverse_list): Delete.
	(mi_check_thread_states): No longer reverse list.