Squashed commit of the following (DO NOT MERGE):

commit 7401608f3b9b52b3348e32ec9fefe7583d6c2fa4
Author: Guang Zhu <guangzhu@google.com>
Date:   Fri Apr 23 11:54:37 2010 -0700

    collect emm meta files for emma instrumented build

    when doing 'make dist', with EMMA_INSTRUMENT on the coverage.em files
    generated for each module will be collected into one emma_meta.zip file

    Change-Id: I382c39a97005e6cae5c79ad7eaef1c8857f658af

commit 8376d70938f6507d54b66fe5832a637aa883974e
Author: Guang Zhu <guangzhu@google.com>
Date:   Wed Mar 10 15:48:03 2010 -0800

    enhancement for building app with emma code coverage

    * global filter to avoid applying instrumentation on emma classes
    * remove local variable information at dex step instead of compile time

    Change-Id: If04c27bc717f34816077a98ead9ceb0dbcbb0d2f

Change-Id: I971bd0f291bede2568b21347247d37a7d035c661