Don't build unittest_enormous_decsriptor.proto in C++ because it's very slow on older GCCs.  This file was meant for testing Java anyway.
Don't build unittest_enormous_decsriptor.proto in C++ because it's very slow on older GCCs.  This file was meant for testing Java anyway.

git-svn-id: 6df6fa3ddd728f578ea1442598151d5900a6ed44@204 630680e5-0e50-0410-840e-4b1c322b438d

kastnerkyle/protobuf-py3,beyang/protobuf,mikelikespie/protobuf,kastnerkyle/protobuf-py3,mpapierski/protobuf,mpapierski/protobuf,chandlerc/protobuf-llvm,chandlerc/protobuf-llvm,mpapierski/protobuf,Distrotech/protobuf,kastnerkyle/protobuf-py3,svn2github/google-protobuf,Distrotech/protobuf,lcy03406/protobuf,beyang/protobuf,machinalis/protobuf-python3,chandlerc/protobuf-llvm,aidansteele/protobuf-mirror,mpapierski/protobuf,da2ce7/protobuf,patrickhartling/protobuf,spilgames/protobuf,svn2github/protobuf-mirror,lcy03406/protobuf,svn2github/protobuf-mirror,mikelikespie/protobuf,machinalis/protobuf-python3,spilgames/protobuf,GreatFruitOmsk/protobuf-py3,svn2github/google-protobuf,patrickhartling/protobuf,GreatFruitOmsk/protobuf-py3,svn2github/protobuf-mirror,Distrotech/protobuf,spilgames/protobuf,svn2github/google-protobuf,lcy03406/protobuf,mkrautz/external-protobuf,aidansteele/protobuf-mirror,datacratic/protobuf,mkrautz/external-protobuf,patrickhartling/protobuf,chandlerc/protobuf-llvm,datacratic/protobuf,svn2github/protobuf-mirror,chandlerc/protobuf-llvm,Distrotech/protobuf,aidansteele/protobuf-mirror,da2ce7/protobuf,aidansteele/protobuf-mirror,mikelikespie/protobuf,GreatFruitOmsk/protobuf-py3,mkrautz/external-protobuf,GreatFruitOmsk/protobuf-py3,patrickhartling/protobuf,patrickhartling/protobuf,lcy03406/protobuf,da2ce7/protobuf,beyang/protobuf,aidansteele/protobuf-mirror,mikelikespie/protobuf,beyang/protobuf,Distrotech/protobuf,GreatFruitOmsk/protobuf-py3,mkrautz/external-protobuf,da2ce7/protobuf,datacratic/protobuf,lcy03406/protobuf,machinalis/protobuf-python3,svn2github/protobuf-mirror,machinalis/protobuf-python3,beyang/protobuf,spilgames/protobuf,mpapierski/protobuf,mkrautz/external-protobuf,mikelikespie/protobuf,datacratic/protobuf,da2ce7/protobuf,kastnerkyle/protobuf-py3,kastnerkyle/protobuf-py3,svn2github/google-protobuf,spilgames/protobuf,svn2github/google-protobuf,datacratic/protobuf