[Patch] BaseTools Python: Migrate Python27 to Python36

["Zhu, Yonghong" <yonghong.zhu@intel.com>]

Hi All,

Now we are working on bugzilla 55<https://bugzilla.tianocore.org/show_bug.cgi?id=55> (https://bugzilla.tianocore.org/show_bug.cgi?id=55)  to migrate BaseTools python tool from Python27 to Python36.  After this migration, the BaseTools will only support Python 3. And for now, user need to install a Python version >= 3.6.
Here is the link: https://github.com/yzhu52/edk2.git   Branch: Python3_V2
In this branch, after run edksetup script file, tool auto detect the Python tool that version >= 3.6,  tool would report error if it can't find the python that >= 3.6.

Current we still in doing some validation for this migration, and not finish the update for UPT, ECC, EOT, Tests those tools and scripts.
We already did following on this branch:

1.       Remove the "from __future__ import" items

2.       Update the xrange to range

3.       Update long to int

4.       Use input instead of raw_input

5.       Not use iteritems(), but use items() directly

6.       Remove the super() function argument

7.       Remove the itertools usage

8.       Fix some open file's read and write function

9.       Hand the bytes and str type difference

10.   Do some list and iterator update

11.   Change the division operation in the expression

12.   Use '\n' but not os.linesep

13.   Update the BinWrappers script

14.   Update edksetup script file


Your suggestions is highly appreciated.

Best Regards,
Zhu Yonghong