Support {, } and | in assembly output

Support {, } and | in assembly output

gcc/

2013-05-06  Maxim Kuznetsov  <maks.kuznetsov@gmail.com>

	* final.c (do_assembler_dialects): Don't handle curly braces and
	vertical bar escaped by % as dialect delimiters.
	(output_asm_insn): Print curly braces and vertical bar if escaped
	by % and ASSEMBLER_DIALECT defined.
	* doc/tm.texi.in (ASSEMBLER_DIALECT): Document new standard escapes.
	* doc/tm.texi: Regenerated.

gcc/testsuite/

2013-05-06  Maxim Kuznetsov  <maks.kuznetsov@gmail.com>

	* gcc.target/i386/asm-dialect-2.c: New testcase.

From-SVN: r198641