Write tests for the fix to bug 101194.  Scimoz mock fix: getCharAt() returns the numeric value of the characters at that posn.

(integrated from komodo (trunk) change 82752 by ericp)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@13882 b87d16e7-d29f-4ee1-b5ec-817d645d335f