Define libprotobuf-lite in Makefile.am.
Define libprotobuf-lite in Makefile.am.

TODO:  Compile conditionally?  Provide a way to omit ExtensionSet?
  Should libprotobuf depend on libprotobuf-lite instead of being a
  stand-alone lib?



git-svn-id: 54a00c96d7caad0f188abf6e0ebede48f6547068@164 630680e5-0e50-0410-840e-4b1c322b438d

tdfischer/protobuf,tdfischer/protobuf,tdfischer/protobuf,tdfischer/protobuf,tdfischer/protobuf