build: Default to dtbToolCM

* The default dtbTool isn't the correct module name for the module that
  actually lives in device/qcom/common/dtbtool

Change-Id: I80b427e3652b99742573bc4d2829e51645a8822b
build: Enable Uyghur locale

* We have a proofreader now

Change-Id: I82c4c852b2c6fcc773bdbec472e9e24dc0d5a7ea
Dual language

Add en_RU
Support real custom toolchains