Revert "get rid of otapackage tools"

This reverts commit 48b5c971e167eff499336f04efe16287758cfa0c.
squisher: update & enhance for cm-10.2

Based on pershoot's modifications from Samsung P3 config

* Modified opticharger, squisher for CM-10.2 build system
* Added support for pngquant (lossy png compression) and
  set it as the preferred tool
* Disabled .asrc compression (negative CPU & memory usage impact)

Change-Id: I87e99f7142ffbec805791236057ee109fe881f58