add missing headers for C99 compilation

bb.c

@@ -25,6 +25,7 @@
 #include <stdlib.h>
 #include <ctype.h>
 #include <aalib.h>
+#include <time.h>
 #include "bb.h"
 
 int finish_stuff, starttime, endtime;

messager.c

@@ -20,7 +20,7 @@
  * with this program; if not, write to the Free Software Foundation, Inc.
  * 675 Mass Ave, Cambridge, MA 02139, USA.
  */
-
+#include <stdlib.h>
 #include <string.h>
 #include "bb.h"
 

scene5.c

@@ -20,7 +20,7 @@
  * with this program; if not, write to the Free Software Foundation, Inc.
  * 675 Mass Ave, Cambridge, MA 02139, USA.
  */
-
+#include <stdlib.h>
 #include <string.h>
 #include <math.h>
 #include "bb.h"

scene8.c

@@ -20,7 +20,7 @@
  * with this program; if not, write to the Free Software Foundation, Inc.
  * 675 Mass Ave, Cambridge, MA 02139, USA.
  */
-
+#include <stdlib.h>
 #include <math.h>
 #include "bb.h"
 #define STATE1 (TIME-starttime1)

textform.c

@@ -2,6 +2,7 @@
 #include <string.h>
 #include <aalib.h>
 #include "bb.h"
+#include <stdlib.h>
 #define MAXLINES 10000
 static char *text = "#cWell we've reached the end of this demo. But #bnot#n the #bREAL END#n because\n\n"
 "#bAA PROJECT#n is here. \n\n"

timers.c

@@ -21,6 +21,7 @@
  *
  * All ugly architecture depended timing code is separated into this file..
  */
+#include <stdlib.h>
 #ifdef _plan9_
 #include <u.h>
 #include <stdio.h>

uncompfn.c

@@ -20,7 +20,7 @@
  * with this program; if not, write to the Free Software Foundation, Inc.
  * 675 Mass Ave, Cambridge, MA 02139, USA.
  */
-
+#include <stdlib.h>
 #include <aalib.h>
 #include "bb.h"