Add keys used to sign Android L-Mint theme

Change-Id: I6f6400fa2af2773cfa0e292e1a3456c631545403
Signed-off-by: Rob Beane <robbeane@gmail.com>
roomservice: Auto-remove duplicated projects

roomservice has improved in the sense that once a duplicate path is
found, a <remove-project> tag will be added into roomservice.xml

Change-Id: If3e1dc672d25996a0cd19628ece24c010e213adf
Merge branch 'kitkat' of https://github.com/AOSPA/android_build into kitkat