fix multi-defination of ObjEqualityComparer

 update ver

Merge branch 'v0.8x' of https://github.com/pangweiwei/slua into v0.8x

 fix android performance drop with JIT on according to luajit mailist

 add IgnoreBaseAttribute to skip auto gen event base

Update LuaValueType.cs

Merge branch 'v0.8x' of https://github.com/pangweiwei/slua into v0.8x

Update LuaCodeGen.cs

 pop extra nil value if checkType with Type argument

 fix byref base type

Merge branch 'master' of https://github.com/pangweiwei/slua