Fix to include system header files for using functions

cde/programs/dtstyle/ColorFile.c

@@ -44,6 +44,7 @@
 #include <stdio.h>
 #include <fcntl.h>
 #include <errno.h>
+#include <fnmatch.h>
 
 #include <X11/Xlib.h>
 

cde/programs/dtstyle/I18nUtil.h

@@ -51,6 +51,7 @@
 #define _i18nUtil_h
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include <X11/Xlib.h>
 #include <X11/Intrinsic.h>

cde/programs/dtstyle/Main.c

@@ -50,6 +50,7 @@
 /*+++++++++++++++++++++++++++++++++++++++*/
 
 #include "signal.h"
+#include <sys/wait.h>
 #ifdef TIME
 # include <time.h>
 #endif

cde/programs/dtstyle/Screen.c

@@ -58,6 +58,7 @@
 #include <stdio.h>
 #include <signal.h>
 #include <errno.h>
+#include <ctype.h>
 
 #include <X11/Intrinsic.h>
 #include <X11/Xutil.h>