trim
echo messages
return to current directory after run
issue #1686:add background color layer in CCTexture2DTest
fix OpenSLEngine can't load resources from SD card
Merge pull request #2086 from lgb/master

Updating build-win32.bat, go back to root foler after executing this script.
issue #1686:disable depth test by default
Merge pull request #2103 from minggo/iss1686-synchronize

Fix some errors in TestCpp
Merge pull request #2099 from waiter/master

fix OpenSLEngine can't load resources from SD card
Update AUTHORS