Update the reference of submodule plugin-x.
template work on IOS/Mac now
template for linux cpp
'develop' -> 'v3' branch for travis ci.
Merge pull request #6388 from dumganhar/travis-ci-build-fix

'develop' -> 'v3' branch for travis ci.
fixed compile fail
fixed return type is not right
Merge pull request #6390 from Dhilan007/v3

fixed compile fail on wp8
clean for kazmath in project file
Merge pull request #6391 from dabingnn/v3_optimize

V3 optimize
Merge pull request #6369 from natural-law/develop

Update the reference of submodule plugin-x.
Fix compile error for Lua
template work on wp8 now
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into dev_compile_error
Merge pull request #6393 from Dhilan007/v3

template work on wp8 now
Merge pull request #6395 from natural-law/develop

Update the reference of submodule plugin-x.
[Jenkins][ci skip] Catch exception in check_queue_build
Merge pull request #6398 from lmskater/fix-check-queue-build-error

[Jenkins][ci skip] Catch exception in check_queue_build
Merge pull request #6399 from dumganhar/v3

fullPathForFilename optimization: Checking whether the path is an empty string.
Merge pull request #6394 from samuele3hu/dev_compile_error

Fix compile error for Lua