Added some missing #includes whose prevent build source with gcc 4.3


git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@2431 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/common/rfb/CapsContainer.cxx b/common/rfb/CapsContainer.cxx
index a64a524..2b56976 100644
--- a/common/rfb/CapsContainer.cxx
+++ b/common/rfb/CapsContainer.cxx
@@ -22,6 +22,7 @@
 //
 
 #include <rfb/CapsContainer.h>
+#include <string.h>
 
 using namespace rfb;