Filtering query params out of LoaderInfo parameters

This change should help eliminate a lot of potential XSS vulnerabilities by removing all query parameters from the Flash `loaderInfo.parameters` list so that we are guaranteed to have _only_ "FlashVars" (HTML-embedded params) left.

Fixes #164.

**Debug output:**
![image](https://f.cloud.github.com/assets/417751/2054166/60fecc3a-8ab1-11e3-94ec-5fa104921457.png)

**Debug code:**
https://github.com/JamesMGreene/zeroclipboard/compare/1.x-filterFlashVarsNoDebug...1.x-filterFlashVarsDebug