Fix header file usage -- there were many unnecessary header files included in
busybox.h which slowed compiles.  I left only what was needed and then fixed up
all the apps to include their own header files.  I also fixed naming for pwd.h
and grp.h functions.  Tested to compile and run with libc5, glibc, and uClibc.
 -Erik
diff --git a/coreutils/rm.c b/coreutils/rm.c
index a9501ec..302599e 100644
--- a/coreutils/rm.c
+++ b/coreutils/rm.c
@@ -28,6 +28,8 @@
 #include <utime.h>
 #include <dirent.h>
 #include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
 
 static int recursiveFlag = FALSE;
 static int forceFlag = FALSE;