Uses reference in for loop inside ccvector_std_string_to_luaval
closed #8843: Fixes DrawNode::drawPoint crash and uses VAO if it's available when draw points.
Small fixes in Sprite3DTest
Fix kerning on signle characters
release old program with the same key before adding glprogram
* [WP8] Enabled GLProgramState restoring on render recreated
Fix Label Additional Kerning All Strings
Add greater than operator to Vec2
replace tab with 4 spaces
replace tab with 4 spaces
Merge pull request #8925 from Teivaz/v3

* [WP8] Enabled GLProgramState restoring on render recreated
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Merge pull request #8921 from TimothyZhang/fix-program-cache-add

release old program with the same key before adding glprogram
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Merge pull request #8918 from dumganhar/iss8843-drawpoint

closed #8843: Fixes DrawNode::drawPoint crash and uses VAO if it's available when draw points.
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Merge pull request #8919 from ahlwong/v3

Fix Label Kerning on Single Characters Cocos2d-X3.3Beta0
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