Pyarmor

From this version, a new obfuscation mode is introduced. By this way, no import hooker, no setprofile, no settrace required. The performance of running or importing obfuscation python scripts has been remarkably improved. It's significant for Pyarmor. Refer to [src/mechanism.md](src/mechanism.md)

* Use this new mode as default way to obfuscate python scripts.
* Add new script "benchmark.py" to check performance in target machine: python benchmark.py
* Change option "--bind-disk" in command "license", now it must be have a value

* Add option "--bind-mac", "--bind-ip", "--bind-domain" for command "license"
* Command "hdinfo" show more information(serial number of hdd, mac address, ip address, domain name)
* Fix the issue of dev name of hdd for Banana Pi

* Fix serial number of harddisk doesn't work in mac osx.

* Support macosx

* Fix issue: load _pytransfrom failed in linux x86_64 by subprocess.Popen
* Fix typo in error messge when load _pytransfrom failed.

In this version, a web gui interface, Pyarmor WebApp is introduced. Besides support MANIFEST.in to list encrypt files.

* In encrypt command, save encrypted scripts with same file structure of source.
* Add a web gui interface for pyarmor.
* Support MANIFEST.in to list files for command encrypt
* Add option --manifest, file list will be written here
* DO NOT support absolute path in file list for command encrypt
* Option --main support format "NAME:ALIAS.py"