K 10 svn:author V 3 dim K 8 svn:date V 27 2014-11-26T23:53:35.665571Z K 7 svn:log V 349 Pull in r216571 from upstream llvm trunk (by Zachary Turner): Fix some semantic usability issues with DynamicLibrary. This patch allows invalid DynamicLibrary instances to be constructed, and fixes the const-correctness of the isValid() method. No functional change. This is needed for supporting the upgrade to a newer LLDB snapshot. END