[1/2] Base: Speed up booting on multicore devices

- Add multithreading support to Installer/installd
- Parallelize package scanning
- Parallelize boot dexopt

Change-Id: Ia6b815bde0e5cdf996fdfdec3ba228bcde9e4e0b
[1/6] Base: Blacklist support

InCallUI: https://gerrit.omnirom.org/#/c/5669/
Mms: https://gerrit.omnirom.org/#/c/5671/
Settings: https://gerrit.omnirom.org/#/c/5011/
TelephonyProvider: https://gerrit.omnirom.org/#/c/5012/
Telephony: https://gerrit.omnirom.org/#/c/5010/

Change-Id: Ic5a59be11f76b4a9eba075d9c3525086b3ee389e