compilefix for gcc-4.7
https://bugs.gentoo.org/show_bug.cgi?id=514128
Signed-of-by: Joerg Bornkessel <hd_brummy@gentoo.org> 22/Jun/2014

diff -Naur vodcatcher-0.2.2.orig/src/LocalFileCache.cc vodcatcher-0.2.2/src/LocalFileCache.cc
--- vodcatcher-0.2.2.orig/src/LocalFileCache.cc	2014-06-22 00:34:55.448489644 +0200
+++ vodcatcher-0.2.2/src/LocalFileCache.cc	2014-06-22 00:36:11.090546002 +0200
@@ -24,6 +24,7 @@
 #include "LocalFileCache.h"
 #include "SdbmHashCalculator.h"
 #include <values.h>
+#include <unistd.h>
 
 using namespace std;