*: mass renaming of USE_XXXX to IF_XXXX
and SKIP_XXXX to IF_NOT_XXXX - the second one was especially
badly named. It was not skipping anything!

diff --git a/coreutils/chmod.c b/coreutils/chmod.c
index 40f681f..9c1c760 100644
--- a/coreutils/chmod.c
+++ b/coreutils/chmod.c
@@ -20,10 +20,10 @@
 
 
 #define OPT_RECURSE (option_mask32 & 1)
-#define OPT_VERBOSE (USE_DESKTOP(option_mask32 & 2) SKIP_DESKTOP(0))
-#define OPT_CHANGED (USE_DESKTOP(option_mask32 & 4) SKIP_DESKTOP(0))
-#define OPT_QUIET   (USE_DESKTOP(option_mask32 & 8) SKIP_DESKTOP(0))
-#define OPT_STR     "R" USE_DESKTOP("vcf")
+#define OPT_VERBOSE (IF_DESKTOP(option_mask32 & 2) IF_NOT_DESKTOP(0))
+#define OPT_CHANGED (IF_DESKTOP(option_mask32 & 4) IF_NOT_DESKTOP(0))
+#define OPT_QUIET   (IF_DESKTOP(option_mask32 & 8) IF_NOT_DESKTOP(0))
+#define OPT_STR     "R" IF_DESKTOP("vcf")
 
 /* coreutils:
  * chmod never changes the permissions of symbolic links; the chmod