Use enum bfd_endian in gdbarch.sh

This patch changes the return type of gdbarch_byte_order and
gdbarch_byte_order_for_code, from 'int' to 'enum bfd_endian'.

gdb:

2014-01-07  Yao Qi  <yao@codesourcery.com>

	* gdbarch.sh (byte_order, byte_order_for_code): Change type to
	'enum bfd_endian'.
	(struct gdbarch_info) <byte_order>: Change type to
	'enum bfd_endian'.
	<byte_order_for_code>: Likewise.
	* gdbarch.c, gdbarch.h: Regenerated.
Fix no previous prototype for '_initialize_gnu_nat' [-Werror=missing-prototypes]

This patch fixes this error below by declaring _initialize_gnu_nat.

../../../git/gdb/gnu-nat.c:3447:1: error: no previous prototype for '_initialize_gnu_nat' [-Werror=missing-prototypes]

gdb:

2014-01-07  Yao Qi  <yao@codesourcery.com>

	* gnu-nat.c (_initialize_gnu_nat): Declare.
Remove declaration of inf_tid_to_proc

inf_tid_to_proc is not defined at all.  This patch is to remove its
declaration.
gdb:

2014-01-07  Yao Qi  <yao@codesourcery.com>

	* gnu-nat.c (inf_tid_to_proc): Remove declaration.
Make functions static.

gdb:

2014-01-07  Yao Qi  <yao@codesourcery.com>

	* gnu-nat.c (make_inf) Update declaration.
	(make_inf): Make it static.
	(inf_set_traced): Likewise.
	(inf_port_to_thread, inf_task_died_status): Likewise.
Use void for empty argument list in trace_me

This patch fixes the following error:

../../../git/gdb/gnu-nat.c: In function 'trace_me':
../../../git/gdb/gnu-nat.c:2106:8: error: old-style function definition [-Werror=old-style-definition]

gdb:

2014-01-07  Yao Qi  <yao@codesourcery.com>

	* gnu-nat.c (trace_me): Use 'void' for empty argument list.
Add qualifier 'const' to argument args

This patch fixes the following error.

../../../git/gdb/gnu-nat.c: In function 'info_port_rights':
../../../git/gdb/gnu-nat.c:3083:11: error: passing argument 1 of 'parse_to_comma_and_eval' from incompatible pointer type [-Werror]
In file included from ../../../git/gdb/breakpoint.h:23:0,
                 from ../../../git/gdb/inferior.h:37,
                 from ../../../git/gdb/gnu-nat.c:55:
../../../git/gdb/value.h:763:22: note: expected 'const char **' but argument is of type 'char **'

gdb:

2014-01-07  Yao Qi  <yao@codesourcery.com>

	* gnu-nat.c (info_port_rights): Add qualifier const to
	argument args.
Remove an empty-body 'if' statement

This patch removes the if statement and the comments together.

gdb:

2014-01-07  Yao Qi  <yao@codesourcery.com>

	* gnu-nat.c (set_exceptions_cmd): Remove an empty body 'if'
	statement.
[python] Add gdb.Type.name attribute.

Consider the following declarations:

    typedef long our_time_t;
    our_time_t current_time = 1384395743;

The purpose of this patch is to allow the use of a pretty-printer
for variables of type our_time_t.  Normally, pretty-printing sniffers
use the tag name in order to determine which, if any, pretty-printer
should be used. But in the case above, the tag name is not set, since
it does not apply to integral types.

This patch extends the gdb.Type list of attributes to also include
the name of the type, thus allowing the sniffer to match against
that name. With that change, I was able to write a pretty-printer
which displays our variable as follow:

    (gdb) print current_time
    $1 = Thu Nov 14 02:22:23 2013 (1384395743)

gdb/ChangeLog:

        * python/py-type.c (typy_get_name): New function.
        (type_object_getset): Add entry for attribute "name".
        * NEWS: Add entry mentioning this new attribute.

gdb/doc/ChangeLog:

        * gdb.texinfo (Types In Python): Document new attribute Types.name.

gdb/testsuite:

        * gdb.python/py-pp-integral.c: New file.
        * gdb.python/py-pp-integral.py: New file.
        * gdb.python/py-pp-integral.exp: New file.

Tested on x86_64-linux.