test suite update - gdb.base/s*

Convert files gdb.base/s*.exp to use standard_output_file et al.

	* gdb.base/save-bp.exp, gdb.base/savedregs.exp,
	gdb.base/scope.exp, gdb.base/sep.exp, gdb.base/sepsymtab.exp,
	gdb.base/set-lang-auto.exp, gdb.base/setshow.exp,
	gdb.base/setvar.exp, gdb.base/shlib-call.exp,
	gdb.base/shreloc.exp, gdb.base/sigall.exp,
	gdb.base/sigaltstack.exp, gdb.base/sigbpt.exp,
	gdb.base/sigchld.exp, gdb.base/siginfo-addr.exp,
	gdb.base/siginfo-infcall.exp, gdb.base/siginfo-obj.exp,
	gdb.base/siginfo.exp, gdb.base/signals.exp, gdb.base/signest.exp,
	gdb.base/signull.exp, gdb.base/sigrepeat.exp,
	gdb.base/sigstep.exp, gdb.base/sizeof.exp,
	gdb.base/skip-solib.exp, gdb.base/so-impl-ld.exp,
	gdb.base/solib-display.exp, gdb.base/solib-nodir.exp,
	gdb.base/solib-overlap.exp, gdb.base/solib-symbol.exp,
	gdb.base/solib-weak.exp, gdb.base/source.exp,
	gdb.base/stack-checking.exp, gdb.base/stale-infcall.exp,
	gdb.base/stap-probe.exp, gdb.base/start.exp,
	gdb.base/step-break.exp, gdb.base/step-bt.exp,
	gdb.base/step-line.exp, gdb.base/step-resume-infcall.exp,
	gdb.base/step-test.exp, gdb.base/structs.exp,
	gdb.base/structs2.exp, gdb.base/structs3.exp,
	gdb.base/symbol-without-target_section.exp: Use standard_testfile,
	standard_output_file, prepare_for_testing, clean_restart.
test suite update - gdb.base/[t-z]

Convert files gdb.base/[t-z]*.exp to use standard_output_file et al.

	* gdb.base/testenv.exp, gdb.base/tui-layout.exp,
	gdb.base/twice.exp, gdb.base/type-opaque.exp, gdb.base/unload.exp,
	gdb.base/unwindonsignal.exp, gdb.base/valgrind-db-attach.exp,
	gdb.base/valgrind-infcall.exp, gdb.base/value-double-free.exp,
	gdb.base/varargs.exp, gdb.base/watch-cond-infcall.exp,
	gdb.base/watch-cond.exp, gdb.base/watch-non-mem.exp,
	gdb.base/watch-read.exp, gdb.base/watch-vfork.exp,
	gdb.base/watch_thread_num.exp, gdb.base/watchpoint-cond-gone.exp,
	gdb.base/watchpoint-delete.exp, gdb.base/watchpoint-hw.exp,
	gdb.base/watchpoint-solib.exp, gdb.base/watchpoint.exp,
	gdb.base/watchpoints.exp, gdb.base/wchar.exp, gdb.base/whatis.exp:
	Use standard_testfile, standard_output_file, prepare_for_testing,
	clean_restart.
Fix up broken ChangeLog entries.

In some previous commits I forgot to prefix the file names with
"gdb.base".  This fixes the ChangeLog entries to be correct.
Move comment on the 'stepping over resolver' mechanism to the internals manual.

This whole comment is now a bit out of place.  I looked into moving it
to handle_inferior_event, close to where in_solib_dynsym_resolve_code
is used, but then there are 3 such places.  I then looked at
fragmenting it, pushing bits closer to the definitions of
in_solib_dynsym_resolve_code and gdbarch_skip_solib_resolver, but then
we'd lose the main advantage which is the overview.  In the end, I
realized this can fit nicely as internals manual material.

This could possibly be a subsection of a new "run control", or "source
stepping" or "stepping" or some such a bit more general section, but
we can do that when we have more related content...  Even the "single
stepping" section is presently empty...

gdb/doc/
2013-06-27  Pedro Alves  <palves@redhat.com>

	* gdbint.texinfo (Algorithms) <Stepping over runtime loader
	dynamic symbol resolution code>: New section, based on infrun.c
	comment.

gdb/
2013-06-27  Pedro Alves  <palves@redhat.com>

	* infrun.c: Remove comment describing the 'stepping over runtime
	loader dynamic symbol resolution code' mechanism; moved to
	gdbint.texinfo.
	* target.c (target_struct_index): Remove.
	* corelow.c (core_gdbarch): Now static.
	* target.c (find_run_target): Remove.
	* target.h (find_run_target): Remove.