Fix some compiler warnings by including some headers and

not defining our own prototype for getenv.

gnu/dist/gkermit/gcmdline.c

@@ -29,6 +29,8 @@
 */
 
 #include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 #include "gkermit.h"
 
 /* Externals */
@@ -53,7 +55,6 @@ _MYPROTOTYPE( VOID fatal, (char *) );
 _MYPROTOTYPE( VOID usage, (void) );
 
 #ifndef NOGETENV
-_MYPROTOTYPE( char * getenv, (char *) );
 #define GARGC 32
 #define GBUFSIZ 256
 static char gbuf[GBUFSIZ], *gargs[GARGC], *gptr = NULL;

gnu/dist/gkermit/gkermit.c

@@ -55,7 +55,9 @@ char *build =  "stty";
 #endif /* POSIX */
 
 #define _GKERMIT_C
+#include <errno.h>
 #include <stdio.h>
+#include <string.h>
 #include "gkermit.h"
 
 /* Forward declarations of functions used within this module... */

gnu/dist/gkermit/gunixio.c

@@ -58,6 +58,8 @@
 */
 
 #include <stdio.h>			/* Standard input/output */
+#include <string.h>
+#include <stdlib.h>
 
 #ifdef POSIX
 #include <termios.h>			/* Terminal modes */