Remove pst from dwarf_decode_lines_1

Hi,
Parameter 'pst' of function dwarf_decode_lines_1 isn't used except
to compute decode_for_pst_p, which has been got in the caller
dwarf_decode_lines.  I wonder it would be good if we just pass
'decode_for_pst_p'.

gdb:

2014-08-15  Yao Qi  <yao@codesourcery.com>

	* dwarf2read.c (dwarf_decode_lines_1): Remove parameter 'pst'.
	Add parameter 'decode_for_pst_p'.  Callers update.
Set print symbol off in some tests

GDB in default prints the symbol associated on an address, and tests
assume that there is no symbol on address zero.  However, on bare
metal target, address may be mapped to zero and there may be a
symbol.  Then, some tests fail as below:

print const_cast<void *> (0)^M
$8 = (void *) 0x0 <_ftext>^M
(gdb) FAIL: gdb.cp/casts.exp: const_cast of 0

p acp->c1^M
$9 = (A *) 0x0 <_ftext>^M
(gdb) FAIL: gdb.cp/class2.exp: p acp->c1

This patch is to set print symbol off in these tests, like what
I did previously https://sourceware.org/ml/gdb-patches/2014-07/msg00257.html

gdb/testsuite:

2014-08-15  Yao Qi  <yao@codesourcery.com>

	* gdb.cp/casts.exp: Set print symbol off.
	* gdb.cp/class2.exp: Likewise.
	* gdb.cp/overload.exp: Likewise.
	* gdb.cp/templates.exp: Likewise.
daily update
Skip tfile.exp if unable to generate trace file

I added proc generate_tracefile in this patch
https://sourceware.org/ml/gdb-patches/2014-03/msg00591.html but
tfile.exp isn't skipped as changelog entry said:

	* gdb.trace/tfile.exp: Skip the test if generate_tracefile
	return 0.

it is a mistake I made at the last minute.  Patch below fixed it.

gdb/testsuite:

2014-08-15  Yao Qi  <yao@codesourcery.com>

	* gdb.trace/tfile.exp: Return -1 if generate_tracefile returns
	false.
Add "frame.h" #include in gdbarch.h.

This include is needed because gdbarch_dummy_id needs the full
definition of struct frame_id.

gdb/ChangeLog:

        * gdbarch.sh: #include "frame.h" in gdbarch.h.  Delete "struct
        frame_info" partial declaration.
        * gdbarch.h: Regenerate.

Tested on x86_64-linux by rebuilding GDB.
Avoid compiler warnings about incomplete parameter types.

gdb/ChangeLog:

	* dcache.h: Include target.h, to avoid compile time warnings.
(dwarf_decode_lines_1): Delete local basic_block, unused.

	* dwarf2read.c (dwarf_decode_lines_1): Delete local basic_block,
	unused.
(dwarf_decode_lines_1): Delete local "column", unused.

	* dwarf2read.c (dwarf_decode_lines_1): Delete local "column", unused.
Regenerate sim configury.
dwarf2read.c (dwarf_decode_lines_1): Add comment.

	* dwarf2read.c (dwarf_decode_lines_1): Add comment.
(dwarf_decode_lines_1): Move definition of adj_opcode closer to use.

	* dwarf2read.c (dwarf_decode_lines_1): Move definition of adj_opcode
	closer to use.