Needed for build on SunOS 4.1.x with gcc (Jeffrey Hutzelman <jhutz@cmu.edu>).

e_os.h

@@ -425,6 +425,9 @@ extern HINSTANCE _hInstance;
 #endif
 
 #if defined(sun) && !defined(__svr4__) && !defined(__SVR4)
+  /* include headers first, so our evil defines don't break it */
+#include <stdlib.h>
+#include <string.h>
   /* bcopy can handle overlapping moves according to SunOS 4.1.4 manpage */
 # define memmove(s1,s2,n) bcopy((s2),(s1),(n))
 # define strtoul(s,e,b) ((unsigned long int)strtol((s),(e),(b)))