Implemented typed, thread-specific logging system. Currently supported types are:

 * Strings
 * Integers
 * Floats
 * Timestamps
 * Process IDs

Added printf-like formatted logging using mentioned types.

Test: included in this CL
Bug: 29421410
Change-Id: Ie07b78d8d39c32fcc8a122ffa9b1b7082800b990