Marek Mahut <mmahut@fedoraproject.org>: patch for gcc 4.3 compatibility

diff -Naur pp3-1.3.3-upstream/pp3.cc pp3-1.3.3/pp3.cc
--- pp3-1.3.3-upstream/pp3.cc	2009-01-03 10:44:03.000000000 +0100
+++ pp3-1.3.3/pp3.cc	2009-01-03 11:29:45.000000000 +0100
@@ -6,6 +6,7 @@
 
 #include <iostream> 
 #include <string> 
+#include <cstring>
 #include <fstream> 
 #include <sstream> 
 #include <vector>