Merge pull request #112 from mbebenita/master

Update extension build system.
Merge pull request #116 from mbebenita/master

Added dummy rendering mode.
Adds stage size parameter
Merge pull request #118 from mbebenita/master

Perf updates.
More precise clipping
Merge pull request #121 from yurydelendik/clip

More precise clipping
Adds symbols info tree
Merge pull request #123 from yurydelendik/symbol-info

Adds symbols info tree
Forgot to stub out console functions in the avm.js shell.
Runtime getCurrentDomain helper.
Clean up getQualifiedClassName and implement getDefinitionByName.
Update caps.