[Android] Packaging tool fail to run with python3.*.

1. Change the print statement to print function.
2. Add encoding when handling the file with python.
Bump version to 5.34.96.0
Merge pull request #1670 from junmin-zhu/python3

[Android] Packaging tool fail to run with python3.*.
[Runtime] Fix launch issue for widget applications that don't have
'content' element in config.xml.

Per Widget spec, the occurrences of 'content' element can be zero or one.
If there is no 'content' in config.xml, we should still be able to launch
widget application by the default 'index.html' path

BUG=XWALK-1109
Merge pull request #1667 from shaochangbin/content-src-issue

[Runtime] Fix launch issue for widget applications that don't have 'content' element in config.xml.
[Tizen Mobile] Remove AppcoreContext.

xwalk_launcher_tizen.cc directly use appcore package in shared process mode, no
matter either mobile or ivi. So this PR removes this legacy code.
Merge pull request #1677 from ds-hwang/remove_appcore

[Tizen Mobile] Remove AppcoreContext.
[Tizen] Specify and ship the proper licenses in the spec file.

Now that we do not care about Tizen 2.x support anymore, we can uncomment
out the lines in the spec file that ship and define the right licenses for
the Crosswalk package.

BUG=XWALK-229