Fixes broken XCode build (issue http://code.google.com/p/googletest/issues/detail?id=317).
Fixes broken XCode build (issue http://code.google.com/p/googletest/issues/detail?id=317).

smarr/googletest,lijun0914/googletest,smarr/googletest,duythanhphan/googletest,haoranzeus/googletest,duythanhphan/googletest,smarr/googletest,lijun0914/googletest,lijun0914/googletest,duythanhphan/googletest,haoranzeus/googletest,duythanhphan/googletest,smarr/googletest,haoranzeus/googletest