Files should explicitly include the definitions they directly depend on (#355)

... start by fixing the include files and the fallout in C source from
removing includes not directly needed by headers that previously included
them.

src/bbtsub.c

@@ -25,6 +25,7 @@
 #include "version.h"
 
 #include <stdio.h>
+#include <stdlib.h>
 
 #ifdef XWINDOW
 #ifndef DOS

src/common.c

@@ -12,6 +12,7 @@
 #include "version.h"
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <setjmp.h>
 #include <fcntl.h>
 #include <string.h> /* for memset */

src/conspage.c

@@ -14,6 +14,7 @@
  *  @file conspage.c
  */
 
+#include <stddef.h>
 #include "lispemul.h"
 #include "address.h"
 #include "adr68k.h"

src/draw.c

@@ -18,6 +18,7 @@
 #include "version.h"
 
 #include <stdio.h>
+#include <stdlib.h>
 
 #ifdef SUNDISPLAY
 #include <sys/ioctl.h>

src/dspif.c

@@ -13,6 +13,7 @@
 #include "version.h"
 
 #include <stdio.h>
+#include <stdlib.h>
 #include "lispemul.h"
 #include "dbprint.h"
 #include "devif.h"

src/lisp2c.c

@@ -13,6 +13,7 @@
 #include "version.h"
 
 #include <stdio.h> /* for sprintf */
+#include <stdlib.h>
 
 #include "lispemul.h"
 #include "lspglob.h"

src/rs232c.c

@@ -9,9 +9,15 @@
 /************************************************************************/
 
 #include "version.h"
-#include "rs232c.h"
-#include "lspglob.h"
+
+#include <fcntl.h>
+#include <sgtty.h>
+#include <stdio.h>
 #include <sys/select.h>
+
+#include "lspglob.h"
+#include "rs232c.h"
+
 /*
  * Lisp Interface
  */

src/setsout.c

@@ -21,6 +21,7 @@
 /************************************************************************/
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <unistd.h>
 #include <sys/file.h>
 #include <sys/types.h>

src/testtool.c

@@ -43,6 +43,7 @@
 */
 #include <stdint.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <setjmp.h>
 
 #include "lispemul.h"

src/tstsout.c

@@ -14,6 +14,7 @@
 #include "version.h"
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <unistd.h>
 #include <string.h>
 #include <sys/file.h>

src/vmemsave.c

@@ -21,7 +21,7 @@
 #include <setjmp.h>
 #include <signal.h>
 #include <stdio.h>
-
+#include <stdlib.h>
 #ifndef DOS
 #include <dirent.h>
 #include <string.h>

src/xwinman.c

@@ -17,6 +17,7 @@
 #include <X11/Xutil.h>
 
 #include "lispemul.h"
+#include "miscstat.h"
 #include "devif.h"
 #include "xdefs.h"
 #include "xscroll.h"