need an option to build user mode in JOB_BRANCH:android-zhongshan

[Alex Tu]

so far, JOB_BRANCH:android-zhongshan can build eng mode image.
But for release, we need user mode image, so please help to add an option to build user mode image.

The build instruction would be like these:
$ repo init -u ssh://git.launchpad.net/~zhongshan-team/zhongshan/+git/platform_manifest -b ${CHECKOUT} --reference ${your-local-mirror}
$ repo sync

$ . build/envsetup.sh
$ lunch meizu_m86-user
$ make -j 8
$ make -j 8 devicepackage

the different with eng build is this line
$ lunch meizu_m86-user

Please still keep a way to build eng build in case some debug propose need it.

[Caio Begotti (caio1982)]

Hi Alex. The zhongshan build already supports that, try editing the dependency and setting the RELEASE param to "user" (the default is "eng" of course). If you want to keep the "eng" builds you can just create a new dependency to handle the new release type.