Also add ability to do abbreviated logging where only the first
4K bytes and last 4K bytes of output are added to the desginated log.
Also update standalog logwrapper command to support the new options.
Change-Id: Ia49cbe58479b9f9ed077498d6852e20b21287bad
Abstracting the functionality of logwrapper into a library and making
use of it for the logwrapper executable.
Change-Id: I2bcf722413f3a8454c6f52137dec86c4477fb8b5
