Add deleted tests back for reflection_cpp2_test.py by addtional exception catch


git-svn-id: http://protobuf.googlecode.com/svn/trunk@558 630680e5-0e50-0410-840e-4b1c322b438d
make dist complains the file name is too long and refuse to put it to tar. Change the file to a shorter name


git-svn-id: http://protobuf.googlecode.com/svn/trunk@559 630680e5-0e50-0410-840e-4b1c322b438d