Reinstating assertions default on in web tests, with -da to turn it off, from r5726, but this time with test fixes for IE-specific assertion trips.

Patch by: flin, except CoverageTest.java & HandlerManagerTest.java
          fabbott, for those two test files
Review by: fabbott, except CoverageTest.java and HandlerManagerTest.java
           jat, for those two test files

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@5755 8db76d5a-ed1c-0410-87a9-c151d255dfc7
9 files changed