Add present_if tags for Proxy, bufferobjects, etc.
Add present_if tags for Proxy, bufferobjects, etc.

svaarala/duktape,markand/duktape,markand/duktape,markand/duktape,markand/duktape,harold-b/duktape,svaarala/duktape,harold-b/duktape,svaarala/duktape,svaarala/duktape,harold-b/duktape,markand/duktape,harold-b/duktape,harold-b/duktape,markand/duktape,harold-b/duktape,harold-b/duktape,markand/duktape,markand/duktape,jmptrader/duktape,jmptrader/duktape,jmptrader/duktape,svaarala/duktape,svaarala/duktape,svaarala/duktape,jmptrader/duktape,harold-b/duktape,jmptrader/duktape,markand/duktape,markand/duktape,jmptrader/duktape,jmptrader/duktape,harold-b/duktape,svaarala/duktape,jmptrader/duktape,harold-b/duktape,jmptrader/duktape,svaarala/duktape,jmptrader/duktape