Changes to build successfully with GCC 3.02

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1503 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/Utils/UnifyFunctionExitNodes.cpp

@@ -11,6 +11,7 @@
 #include "llvm/iTerminators.h"
 #include "llvm/iPHINode.h"
 #include "llvm/Type.h"
+using std::vector;
 
 // UnifyAllExitNodes - Unify all exit nodes of the CFG by creating a new
 // BasicBlock, and converting all returns to unconditional branches to this