* symfile.h (obsavestring): Don't declare.

	* symfile.h (obsavestring): Don't declare.
	* symfile.c (obsavestring): Remove.
	* ada-exp.y: Use obstack_copy0, not obsavestring.
	* ada-lang.c: Use obstack_copy0, not obsavestring.
	* coffread.c: Use obstack_copy0, not obsavestring.
	* cp-namespace.c: Use obstack_copy0, not obsavestring.
	* dbxread.c: Use obstack_copy0, not obsavestring.
	* dwarf2read.c: Use obstack_copy0, not obsavestring.
	* jit.c: Use obstack_copy0, not obsavestring.
	* mdebugread.c: Use obstack_copy0, not obsavestring.
	* psymtab.c: Use obstack_copy0, not obsavestring.
	* stabsread.c: Use obstack_copy0, not obsavestring.
	* xcoffread.c: Use obstack_copy0, not obsavestring.