[CIFS] clean up some hard to read ifdefs

Christoph had noticed too many ifdefs in the CIFS code making it
hard to read.  This patch removes about a quarter of them from
the C files in cifs by improving a few key ifdefs in the .h files.

Signed-off-by: Steve French <sfrench@us.ibm.com>

fs/cifs/cifs_debug.c

@@ -438,7 +438,7 @@ cifs_stats_read(char *buf, char **beginBuffer, off_t offset,
 
 	return length;
 }
-#endif
+#endif /* STATS */
 
 static struct proc_dir_entry *proc_fs_cifs;
 read_proc_t cifs_txanchor_read;
@@ -481,7 +481,7 @@ cifs_proc_init(void)
 				cifs_stats_read, NULL);
 	if (pde)
 		pde->write_proc = cifs_stats_write;
-#endif
+#endif /* STATS */
 	pde = create_proc_read_entry("cifsFYI", 0, proc_fs_cifs,
 				cifsFYI_read, NULL);
 	if (pde)
@@ -917,4 +917,12 @@ security_flags_write(struct file *file, const char __user *buffer,
 	/* BB should we turn on MAY flags for other MUST options? */
 	return count;
 }
-#endif
+#else
+static inline void cifs_proc_init(void)
+{
+}
+
+static inline void cifs_proc_clean(void)
+{
+}
+#endif /* PROC_FS */