* libiberty.h (unlock_stream): New.

libiberty:
	* fopen_unlocked.c (unlock_stream): New.
	Consolidate unlocking code into a helper function.

	* functions.texi: Regenerate.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@98234 138bc75d-0d04-0410-961f-82ee72b054a4