Ucltip

* Fix:
* Missing VERSION.txt, MANIFEST.in

* New features:
* global_config to change variables
- via_shell: set all command executed in os.system
* support to specifcy current directory when running a command
* regcmds can recongize the commands shold be use CmdDispatcher
class (very limitated)
* New Test Case
* GlobalConfigTestCase
* Enhancement:
* CommandNotFound to knows which command be used
* Fix:
* HelperTestCase don't reset __builtin__ to default
* setup.py - does not include non-ucltip python file in tar bar

* New features:
* avaliable for setting global configure
* pipeline
* New Class: Pipe
* New Function:global_config
* Enhance class customiz way
* Rename Paramater: interact prammater -> as_process in
ExecutableCmd.execute
* Update README.txt

* New features:
* create a combined command string for testing
* setting default command options
* New Class: CmdConfiguration, SubCmd
* Rename Function: reg_singlecmds -> regcmds
* Rename Class: SingleCmd -> Cmd
* Change copyright year 2010 to 2011
* New Test: ExecutedCmd, UtilsTestCase, SubCmdTestCase,
CmdDispatcherTestCase, CustomClassTestCase,
HelperTestCase
* Upadte Readme.txt
* Update comments