* Makefile.in (CFILES): Add calloc.c and getpwd.c.
	(REQUIRED_OFILES): Add getpwd.o.
	(getpwd.o): Add target.

	* configure.in (AC_PREREQ): Bump to 2.13.
	(AC_CHECK_HEADERS): Add check for <sys/stat.h>.

	* getpwd.c: New file, moved here from gcc.

From-SVN: r28996