(Depends-on): Add stdlib.
(Makefile.am): Remove lib_SOURCES.
(Include): Use <stdlib.h> instead of exit.h.
+ * lib/argmatch.c: Don't include exit.h.
+ * lib/execute.c: Likewise.
+ * lib/pagealign_alloc.c: Likewise.
+ * lib/pipe.c: Likewise.
+ * lib/wait-process.c: Likewise.
+ * lib/copy-file.c: Include <stdlib.h> instead of exit.h.
+ * lib/exitfail.c: Likewise.
+ * lib/savewd.c: Likewise.
+ * lib/xsetenv.c: Likewise.
+
* modules/stdlib: New file.
* lib/stdlib_.h: New file, incorporating exit.h, mkdtemp.h, mkstemp.h