include/

include/
	* hashtab.h (htab_alloc_with_arg, htab_free_with_arg): Add new types.
	(struct htab): Add alloc_arg, alloc_with_arg_f, free_with_arg_f.
	(htab_create_alloc_ex): New prototype.
	(htab_set_functions_ex): New prototype.

libiberty/
	* hashtab.c (htab_create_alloc_ex): New function.
	(hatab_set_functions_ex): New function.
	(htab_delete, htab_expand): Support alternate allocation functions.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@61820 138bc75d-0d04-0410-961f-82ee72b054a4