Problem with 0.3.0-RC4 on mac

[Doug Judd]

On a mac (SnowLeopard), I installed Thrift 0.3.0 RC4.  When I compile my
app, I get the following error:

/usr/local/include/thrift/concurrency/Mutex.h:136: error: comma at end of
enumerator list

Looking into this file, there is an extraneous trailing comma:

enum RWGuardType {
  RW_READ = 0,
  RW_WRITE = 1,
};

- Doug