pull these headers only into files that need them.

ok oga@

calmwm.c

@@ -18,6 +18,9 @@
  * $Id$
  */
 
+#include <getopt.h>
+#include <signal.h>
+
 #include "calmwm.h"
 
 Display				*X_Dpy;

calmwm.h

@@ -26,13 +26,9 @@
 #include <sys/stat.h>
 #include <sys/wait.h>
 
-#include <assert.h>
 #include <ctype.h>
 #include <err.h>
 #include <errno.h>
-#include <dirent.h>
-#include <getopt.h>
-#include <signal.h>
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>

client.c

@@ -18,6 +18,8 @@
  * $Id$
  */
 
+#include <assert.h>
+
 #include "calmwm.h"
 
 static struct client_ctx	*client_mrunext(struct client_ctx *);

group.c

@@ -19,6 +19,8 @@
  * $Id$
  */
 
+#include <assert.h>
+
 #include "calmwm.h"
 
 static void		 group_add(struct group_ctx *, struct client_ctx *);

kbfunc.c

@@ -18,6 +18,7 @@
  * $Id$
  */
 
+#include <dirent.h>
 #include <paths.h>
 
 #include "calmwm.h"

search.c

@@ -17,6 +17,7 @@
  * $Id$
  */
 
+#include <assert.h>
 #include <fnmatch.h>
 
 #include "calmwm.h"