ngrep: don't use versioned header

Signed-off-by: Wade Berrier <wberrier@gmail.com>

diff -ur ngrep-1.45/ngrep.c ngrep-1.45.mod/ngrep.c
--- ngrep-1.45/ngrep.c  Tue Nov 28 15:38:43 2006
+++ ngrep-1.45.mod/ngrep.c      Sat May 19 10:21:27 2007
@@ -92,7 +92,7 @@
 #endif
 
 #if USE_PCRE
-#include "pcre-5.0/pcre.h"
+#include "pcre.h"
 #else
 #include "regex-0.12/regex.h"
 #endif