All apps now read source.properties located in SDK/tools
to know which version they. This is used in about box display
and in ping usage.
Change-Id: I6620c3eb703c32bfcdfd96e6a27bffc7a123b974
The SDK now contains 32 and 64 bit version of SWT. DDMS and Traceview
use the archquery java app to check the architecture of the VM to decide
which version of SWT should be used to run the apps.