This way we kill a few strdup() and free() calls.
Test: 1. recovery_component_test still passes;
2. Applying an update with the new updater works;
3. The error code in a script with abort("E310: xyz") is recorded into
last_install correctly.
Change-Id: Ibda4da5937346e058a0d7cc81764d6f02920010a
Now they live in tests/component/edify_test.cpp.
Also rename edify/main.cpp to edify/edify_parser.cpp. It becomes a
host-side debugging tool that validates the input edify script. However,
it supports edify builtin functions only and doesn't recognize the ones
defined via updater.
Test: recovery_component_test passes on device.
Change-Id: Ib94a787bf15098a9cc078d256b6a6dc96ff12b2e