Cup

1] Fix division bug for py3
2] Fix is_alive for py3 / isAlive for py2 compatibility issue

* [Bug] Epoll Lost Events Bug fix
* [Compatibility] Fix Py2 comatibility issue for cup.services.heartbeat

[Bug] cup.net.asyn | Fix lost socket events if cup encounters busy network activities.
[Enhancement] cup.services.heartbeat | Security fix for arbitrary binaries that you might received
[Py3 compatibility] Undergoing... not finished yet.

* [Compatibility] *cup.log* | Fix unicode bug for py3
* [Enhancement] *cup.log* | Add xdebug/xinfo/xinit_comlog in order to support different loggers
* [Removal] *cup.jenkinslib* | Recommand using python-jenkins to replace cup.jenkinslib
* [Enhancement] *cup.cache*| Enhance KVCache, add pop_expired. Support setting up "maxsize" for the cache pool
* [Enhancement] *cup.services.buffer*| Fix encode/decode bug for py3
* [Removal] *cup.bidu* | Move cup.bidu to cupbidu

* [Enhancement] *cup.services.generator* | Add visibility to Cached UUID
* [Enhancement] *cup.util.conf* | Fix py3 support bug
* [New] *cup.services.executor* | Add Crontab-like execution service
* [Bug] *cup.net.asyn.context* | Fix bug which introduces RW Lock problem
* [Compatibility] * cup.shell.expect | Fix compatibility bug related to remote execution
* [New] *cup.timeplus* | Add TimePlus for i18n time related functions
* [Bug] *cup.shell.oper and cup.shell.expect* | Fix bugs for remote execution and async shell run

* [Enhancement] *cup.services.generator* | Add visibility to Cached UUID
* [Enhancement] *cup.util.conf* | Fix py3 support bug
* [New] *cup.services.executor* | Add Crontab-like execution service
* [Bug] *cup.net.asyn.context* | Fix bug which introduces RW Lock problem
* [Compatibility] * cup.shell.expect | Fix compatibility bug related to remote execution
* [New] *cup.timeplus* | Add TimePlus for i18n time related functions
* [Bug] *cup.shell.oper and cup.shell.expect* | Fix bugs for remote execution and async shell run