Rename --n32 to --x32.

Rename --n32 to --x32.

gas/

2011-01-14  H.J. Lu  <hongjiu.lu@intel.com>

	* config/tc-i386.c (OPTION_N32): Renamed to ...
	(OPTION_X32): This.
	(md_longopts): Replace n32 with x32.
	(md_parse_option): Updated.
	(md_show_usage): Likewise.

	* doc/c-i386.texi: Replace n32 with x32.

gas/testsuite/

2011-01-14  H.J. Lu  <hongjiu.lu@intel.com>

	* gas/i386/ilp32/cfi/ilp32.exp: Replace --n32 with --x32.
	* gas/i386/ilp32/elf/ilp32.exp: Likewise.
	* gas/i386/ilp32/ilp32.exp: Likewise.
	* gas/i386/ilp32/lns/ilp32.exp: Likewise.

ld/testsuite/

2011-01-14  H.J. Lu  <hongjiu.lu@intel.com>

	* ld-x86-64/ilp32-1.d: Replace --n32 with --x32.
	* ld-x86-64/ilp32-2.d: Likewise.
	* ld-x86-64/ilp32-3.d: Likewise.
	* ld-x86-64/ilp32-4.d: Likewise.
	* ld-x86-64/ilp32-5.d: Likewise.
	* ld-x86-64/x86-64.exp: Likewise.