make style applied
THRIFT-2859: JSON generator - fixed i64 numbers generation

Client: JSON
Patch: Stig Bakken

Also forced "C locale" for numbers - problems where detected in JSON lib
in C++, so fixing it in generator also might be a good idea.

This closes #305
THRIFT-2838 TNonblockingServer can bind to port 0 (i.e., get an OS-assigned port) but there is no way to get the port number