[Dev] Build Sheriff and improved tools

[Morgen Sagen]

For kicks I wrote an OSX dashboard widget that gives a simple green  
light / red light indicator for the status of the basic unit test  
machines ('kona-win', 'maunaloa-linux', and 'molokini-osx').  It  
doesn't take the performance machines or the full build machines into  
account, but perhaps some day I'll make that an option.

The widget takes the form of a traffic stoplight; it will briefly  
show a yellow light while it accesses the tinderbox report.  A red  
light means a test failed, and green means all unit tests are  
passing.  Clicking on the stoplight will bring up the full tinderbox  
page in your browser.

Enjoy:

     http://web.mac.com/morgensagen/ChandlerTinderboxWidget.dmg

Once you have downloaded the .dmg file, open it by double-clicking.   
Inside it will be ChandlerTinderbox.wdgt; double-click the .wdgt and  
Dashboard should install it for you.

~morgen

P.S. It's also checked into my sandbox if you feel like improving it.