Add LOCAL_OVERRIDES_MODULES

LOCAL_OVERRIDES_MODULES is similar to LOCAL_OVERRIDES_PACKAGES, but is
for executables.

Bug: 36491275
Test: LOCAL_OVERRIDES_MODULES := foo should prevent a target executable
foo from being installed. If foo is not a target executable, error
should be reported.

Change-Id: I558f3d94105f9e319f8413c1290799f1c70ee131