Fix unreliable test -- it checks for implementation details that vary between
JREs.

This whole test needs to be rewritten, but for now I just added GWT.isScript()
checks around the fragile tests.

Patch by: jat
Review by: jgw (desk review)


git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@4212 8db76d5a-ed1c-0410-87a9-c151d255dfc7