Exclude pbconfg.h from dist, otherwise it breaks VS builds.
Exclude pbconfg.h from dist, otherwise it breaks VS builds.

Change-Id: I7f745929b137b93c122448a4a2d9a7bbab6648d6

google/protobuf,google/protobuf,Livefyre/protobuf,Livefyre/protobuf,Livefyre/protobuf,google/protobuf,google/protobuf,google/protobuf,Livefyre/protobuf,Livefyre/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf