Quick compiler: free up space in MIR.

The width field in MIR isn't especially useful - it could always
be recalculated from the Dalvik instruction.  This CL eliminates
it to allow the 16 bits it occupied to be used for the ID of the
parent BasicBlock.

Change-Id: I75ab8562ca217f0f819ecfc417014dee74bc587e
5 files changed