Finish task - use thrift to build a simple rpc framework, develop master server and test client.
    Next task - design xml foramt, and work out information about agent ip, shell script, arguments,
    etc.
Add examples - using boost to parse XML document, shell to create database and tables, mysql API program.
Merge master branch - fix conflicts.
Fix some formats proble before merging with master.
Merge branch 'renzhen/dev'