import: datamodel v2.01
import: datamodel v2.02
import: datamodel v2.03
import: datamodel v2.04
new: support LOCAL_GENERATED_SOURCES
new: support LOCAL_ADDITIONAL_DEPENDENCIES [exper]
new: support LOCAL_ADDITIONAL_HEADERS order-only
new: generated flag file
opt: touch flag in the begin
opt: when gcc -MD, -isystem also output *.d
fix: note FOR