Add target for windows systems.
* runtests2.pl
Add xpcshell option, no longer requires \n at end of list file.
* ecma/ExecutionContexts/10.1.3.js
Reformatted.
http://www.mozilla.org/js/tests/library.html for information about
these tests, like how to run them and stuff.
According to fur, these tests should not get checked out when you
check out Mozilla -- you'd have to specifically check out mozilla/js/tests
to get all these files.