update to latest version of libadb
copy ADB to helper/ on 'make [build]' so 'make package' works in a clean repo
ignore the generated helper/data/ subdirectory
Merge branch 'master' into update-libadb
update to latest version of libadb
clean helper/data
remove unnecessary dependency on remote package when building locally; use LIB_SUFFIX consistently
Merge pull request #10 from mykmelez/update-libadb

update libadb and make other useful changes r=@ochameau