[wrt] Update case id for wrt-manifest-android-tests
[wrt] Rename suite and update tcs for wrt packagemgt
[wrt] Fix issue for wrt-extension-android-tests
[wrt] update tests and mv googleplay from wrt to misc
[misc] Add 6 TCs due to cordova usecase update
[wrt] Rename and copy source for wrt-webfeatures-android-tests
[wrt] Rename and copy source for wrt-security-android-tests
Merge pull request #528 from wanghongjuan/wanghongjuan/misc/cordova-usecase

[misc] Add 6 TCs due to cordova usecase update
Merge pull request #526 from kangxu/kangxu/wrt/wrt-googleplay-android-tests/update

[wrt] update tests and mv googleplay from wrt to misc
Merge pull request #525 from kangxu/kangxu/wrt/wrt-extension-android-tests/fix

[wrt] Fix issue for wrt-extension-android-tests
Merge pull request #522 from kangxu/kangxu/wrt/wrt-packagemgt-android-tests/update

[wrt] Rename suite and update tcs for wrt packagemgt
Merge pull request #520 from kangxu/kangxu/wrt/wrt-manifest-android-tests/updateId

[wrt] Update case id for wrt-manifest-android-tests
Merge pull request #531 from kangxu/kangxu/wrt/wrt-security-android-tests/rename

[wrt] Rename and copy source for wrt-security-android-tests
Merge pull request #529 from kangxu/kangxu/wrt/wrt-webfeatures-android-tests/rename

[wrt] Rename and copy source for wrt-webfeatures-android-tests
[usecase-wrt] modify wrt-usecase-tizen-tests

[Detailed commit message]
Unit test platform: [tizen]
Unit test result summary: pack to wgt/xpk, all tcs is showing normally
[misc-xwalk]Move webaudio sample to xwalk system tests

- Fail Reason: the sample crashes, when repeatedly navigating to webpages with audio playback using WebAudio

Impacted TCs num(approved): New 0, Update 1, Delete 0
Unit test Platform: Andriod
Test result summary: Pass 0, Fail 1, Blocked 0
Merge pull request #524 from JianfengXu/xujf/misc/xwalk

[misc-xwalk] Move WebAudio sample to xwalk system tests
[wrt] Separate wrt-rtcore-android-tests into 3 suites
[misc] Update WebAudio test purpose to reflect XWALK-1993

- Reword the README.md
- Remove trailing space from pack.sh
[wrt] Fix issue for wrt-extensionmanu-android-tests