[patch] pmdate doesn't compile without pcp installed

[Martin Hicks <mort@xxxxxxx>]

This patch fixes up compiling pmdate on a system without PCP installed.

diff --git a/src/pmdate/pmdate.c b/src/pmdate/pmdate.c
index 9ea3a2e..8578f58 100644
--- a/src/pmdate/pmdate.c
+++ b/src/pmdate/pmdate.c
@@ -18,8 +18,8 @@
  * Display offset date
  */
 
-#include <pcp/pmapi.h>
-#include <pcp/impl.h>
+#include "pmapi.h"
+#include "impl.h"
 
 #define usage "Usage: pmdate { +valueS | -valueS } ... format\n\
 \n\