[webapi][XWALK-893] Add 6 Tcs and update 24 Tcs for iap
- Modify the way of using iap
- Failure analysis: The restore method does not suppot
- Block analysis: "In App Purchase" feature does not allowed in China

Impacted tests(approved): new 6, update 24, delete 0
Unit test platform: [Android]
Unit test result summary: pass 6, fail 2, block 22
[misc-uiautomation] Add 242  reference tests to tests.xml
[misc-uiautomation] Add reference file for html5-extra
[wrt] [XWALK-1957] Update TC for nacl
[webapi][XWALK-893] Add extension for iap
Merge pull request #390 from wanghongjuan/wanghongjuan/webapi/nacl-update

[wrt] [XWALK-1957] Update TC steps for nacl
[wrt][XWALK-890]Update tcs for three icon check purpose

ivi crosswalk-8.36.164:
install the manifest_icon_three_tests.xpk
check applications.db find the three icon value in db record.
[wrt][XWALK-890]update test.py

1.add checkdb.sh
2.add nagative seed
3.update test.py
[wrt] [XWALK-332] Update TC steps for xwalk-332
[webapi] Update 52 Tcs for nativefilesystem
- On android phone and tizen IVI support diffent dir lists. Cannot
  make sure which dir is supported on device, so test dirs one by one

Impacted tests(approved): new 0, update 52, delete 0
Unit test platform: [Android][Tizen IVI]
Unit test result summary: pass 52, fail 0, block 0
Merge pull request #377 from yunxliu/yunxliu/webapi/change_iap_profiles

[webapi][XWALK-893] Add extension for iap
Merge pull request #392 from linshen/update-xwalk-890

[wrt][XWALK-890]update test.py
Merge pull request #393 from wanghongjuan/wanghongjuan/wrt/xwalk-332

[wrt] [XWALK-332] Update TC steps for xwalk-332
[wrt][XWALK-2028] Add 2 tcs

Update webapp is fail
Merge pull request #337 from chenxix/chenxi/misc-uiautomation/html5-extra

[misc-uiautomation] Add reference file for html5-extra
Merge pull request #384 from yunxliu/yunxliu/webapi/change_iap_dir

[webapi] Update 52 Tcs for nativefilesystem
[webapi][XWALK-1330]create 63 tests for Audio System and change test status to approved

- Fail Reason: run connect method, the error callback is invoked.

Impacted TCs num(approved): New 73, Update 0, Delete 0
Unit test Platform: [Tizen IVI]
Test result summary: Pass 4, Fail 69, Blocked 0
Merge pull request #397 from linshen/add-tcs-for-xwalk-2028

[wrt][XWALK-2028] Add 2 tcs
Merge pull request #331 from chenxix/chenxi/misc-uiautomation/tests

[misc-uiautomation] Add 250 reference tests to tests.xml
Merge pull request #394 from JianfengXu/xujf/audiosystem/add

[webapi][XWALK-1330]create 63 tests for Audio System and change test status to approved