Changed SetLineCallback so that it is safe to call it from a second thread while the context is running


git-svn-id: http://svn.code.sf.net/p/angelscript/code/trunk/sdk@2077 404ce1b2-830e-0410-a2e2-b09542c77caf
The ternary condition operator can now be used as lvalue if both options are lvalues of the same type

git-svn-id: http://svn.code.sf.net/p/angelscript/code/trunk/sdk@2078 404ce1b2-830e-0410-a2e2-b09542c77caf
opImplConv can now be used to allow implicit conversion to bool for registered value types


git-svn-id: http://svn.code.sf.net/p/angelscript/code/trunk/sdk@2079 404ce1b2-830e-0410-a2e2-b09542c77caf