* dyn-string.h: Move here from gcc/dyn-string.h.  Add new functions.

	* demangle.h (DMGL_GNU_NEW_ABI): New macro.
	(DMGL_STYLE_MASK): Or in DMGL_GNU_NEW_ABI.
	(current_demangling_style): Add gnu_new_abi_demangling.
	(GNU_NEW_ABI_DEMANGLING_STYLE_STRING): New macro.
	(GNU_NEW_ABI_DEMANGLING): Likewise.
	(cplus_demangle_new_abi): New declaration.

In libiberty,

	* Makefile.in (CFILES): Add cp-demangle.c and dyn-string.c.
	(REQUIRED_OFILES): Add cp-demangle.o and dyn-string.o.
	(cp-demangle.o): New dependency.
	(dyn-string.o): Likewise.

	* dyn-string.c: Move here from gcc/dyn-string.c.  Add new functions.

	* cplus-dem.c (libiberty_demanglers): Add initializer for new-ABI
	demangler.
	(cplus_demangle): Call cplus_demangle_new_abi if in new-ABI
	demangling mode.
	(gnu_new_abi_symbol_characters): New function.
	(main): Use gnu_new_abi_symbol_characters.  * cp-demangle.c: New
	file.
	* cp-demangle.c: New file.

From-SVN: r34397