Fix changelong entry.

  Each changelog entry should be tab-prefixed.
Fix display of tabulation character for mingw hosts.

Pierre proposed this patch
https://sourceware.org/ml/gdb-patches/2013-10/msg00011.html and
Tom gave a suggestion that it's better to do check \t in print_wchar
<https://sourceware.org/ml/gdb-patches/2013-11/msg00148.html>
However, I don't see the follow-up to this discussion.

We encounter two fails in printcmds.exp on mingw host, and Pierre's
patch fixes them.  I pick it up, update a little per Tom's
comments, and post it here for review.  This patch fixes these fails
below on mingw32 host.

FAIL: gdb.base/charset.exp: print string in ASCII
FAIL: gdb.base/charset.exp: try printing '\t' in ASCII
FAIL: gdb.base/charset.exp: print string in ISO-8859-1
FAIL: gdb.base/charset.exp: try printing '\t' in ISO-8859-1
FAIL: gdb.base/charset.exp: print string in UTF-32
FAIL: gdb.base/charset.exp: try printing '\t' in UTF-32
FAIL: gdb.base/printcmds.exp: p ctable1[9]
FAIL: gdb.base/printcmds.exp: p &ctable1[1*8]

Also regression tested on x86_64-linux.  Is it OK?

gdb:

2014-05-16  Pierre Muller  <muller@sourceware.org>
	    Yao Qi  <yao@codesourcery.com>

	* valprint.c (print_wchar): Move the code on checking whether
	W is a printable wide char to the default branch of switch
	statement below.  Call wchar_printable instead of gdb_iswprint.
Copy file1.txt to remote host in dw2-filename.exp and dw2-anonymous-func.exp

Some gdb.dwarf2/*.exp tests copy file1.txt to host via gdb_remote_download
but dw2-filename.exp and dw2-anonymous-func.exp don't do that.  Looks like
an oversight in this patch
https://sourceware.org/ml/gdb-patches/2013-08/msg00365.html

There are some fails in remote host testing.
FAIL: gdb.dwarf2/dw2-anonymous-func.exp: list file1.txt
FAIL: gdb.dwarf2/dw2-filename.exp: interpreter-exec mi -file-list-exec-source-files
FAIL: gdb.dwarf2/dw2-filename.exp: info sources

This patch is to invoke gdb_remote_download to copy file1.txt to host
and remote it at the end.  This patch fixes these fails above.

gdb/testsuite:

2014-05-16  Yao Qi  <yao@codesourcery.com>

	* gdb.dwarf2/dw2-filename.exp: Copy file1.txt to host.  Remove
	file1.txt from host at the end.
	* gdb.dwarf2/dw2-anonymous-func.exp: Likewise.
mi-support.exp: Fix some pastos.

gdb/testsuite/
2014-05-16  Pedro Alves  <palves@redhat.com>

	* lib/mi-support.exp (mi_expect_stop): On timeout, say "timeout"
	instead of "unknown output after running".
This adds support for marking RL78 binaries as either supporting 32-bit
or 64-bit doubles.  It also makes the linker complain if the user attempts
to link together binaries with different sized doubles.

	* elf32-rl78.c (rl78_elf_merge_private_bfd_data): Complain if
	64-bit doubles objects mix with 32-bit doubles objects.
	(rl78_elf_print_private_bfd_data): Describe 64-bit doubles flag.

	* readelf.c (get_machine_flags): Handle RL78 64-bit doubles flag.

	* config/tc-rl78.c (enum options): Add OPTION_32BIT_DOUBLES
	and OPTION_64BIT_DOUBLES.
	(md_longopts): Add -m32bit-doubles and -m64bit-doubles.
	(md_parse_option): Parse -m32bit-doubles and -m64bit-doubles.
	(md_show_usage): Show all of the RL78 options.
	(rl78_float_cons): New static functions.
	(md_pseudo_table): Update handler for "double".
This fixes a few issues with pe/coff build-ids that were discovered since the
original patches were posted:

  pe/coff: Display GUID build-id in the conventional way
  pe/coff: Don't interpret debug directory in section with no contents
  pe/coff: Keep .build-id with --only-keep-debug
  pe/coff: Don't break .build-id with objcopy/strip

	* peXXigen.c (pe_print_debugdata): Don't interpret debug directory
	in a section with no contents.
	(is_vma_in_section, find_section_by_vma): New functions.
	(_bfd_XX_bfd_copy_private_bfd_data_common): Recalculate file
	offsets in the debug directory.
	(_bfd_XXi_slurp_codeview_record, _bfd_XXi_write_codeview_record):
	Byte-swap GUID from little-endian to big-endian order for
	consistent and conventional display.

	* objcopy.c (is_nondebug_keep_contents_section): New function.
	(setup_section): Use it.
	* configure.tgt: Add /lib to dragonfly NATIVE_LIB_DIRS.