Added new pvt flash tool
Updated naming rule for pvt
Refactoring auto_flash_from_PVT.sh
Updated the dialog layout of flash_pvt
Let auto_flash_from_PVT.sh work now
Updated usage message
Added PVT mozilla-central-unagi-eng build into PVT_DL_LIST.conf
Updated usage of auto_flash_from_PVT.sh
Merge pull request #23 from altsai/master

Fix shallow flash issues when using master
temp
support mac osX ui

fix flash QC Ril logic; add master version for leo build