Fixed the C++ method name class to be a bit more picky about what it identifies as a C++ method.

This was done by using regular expressions on any basename we find to ensure it is valid.

This fixed setting breakpoints by name with values like '[J]com.robovm.debug.server.apps.SleepLoop.startingUp()V'. This was previously triggering the C++ method name class to identify the string as C++ with a basename of '[J]com.robovm.debug.server.apps.SleepLoop.startingUp' which was obviously incorrect. 

The changes also fixed errors in templated function names like "void foo<int>(...)" where "void foo<int>" was being identified incorrectly as the basename. We also handle more C++ operators correctly now.

llvm-svn: 221416