New mozStorage Functionality

I just landed a lovely patch from Lev Serebryakov that does several awesome things for mozStorage (Bug 333848):

• Adds support to allow functions to return values
• Adds support for aggregate functions
• Adds support for progress handlers (which can cancel long running queries)

I want to thank Lev for putting up with massive delays on getting reviews for his code, and adding xpcshell unit tests along with the C++ test. The thing I really like about having xpcshell unit tests is that it shows you how to use the API with JavaScript (I won’t get into how testing also helps you design a better API…). If you want to see how to the new stuff works, check out the test files.