include emma into core library on conditional flag

emma library is used for collecting code coverage. Current pain point is that
for collecting code coverage, developers either need to include emma as a
local static library, or change BOOTCLASSPATH to include emma which includes
hacking boot image and reflashing it.

With this change, emma will be integrated into core.jar if EMMA_INSTRUMENT flag
is on, so pushing the updated framework.jar and perform a runtime restart will
make emma globally available to all code coverage tests.

This change will only affect code coverage builds.

Change-Id: I097254835ef4817d068e8946ecbec60135e1f515
1 file changed