fixed the download file name of v120 and master inari builds.
[.PVT_DL_LIST.conf]
Some devices might not have root from the start
Removing persistant databases
Merge pull request #34 from nhirata/CrashReportFix

Some devices might not have root from the start
Merge pull request #35 from nhirata/RemovePersistant

Removing persistant databases
updated -f|--flash to -f|--full
[auto_flash_from_PVT.sh]
[auto_flash_from_TWCI.sh]
Removing persistant databases base on PR #35 [shallow_flash.sh]
removed "availabe builds" when only "-v" paramerter
[auto_flash_from_PVT.sh]
[auto_flash_from_TWCI.sh]
added check_build_id function [auto_flash_from_PVT.sh]
fixed parameters from "build/Gecko/flash" to "buildid/gecko/full"
[auto_flash_from_PVT.sh]
[auto_flash_from_TWCI.sh]
added file check for gaia/gecko/image [auto_flash_from_PVT.sh]
Updated download_desktop_client.sh
Merge branch 'master' of https://github.com/Mozilla-TWQA/B2G-flash-tool
Merge pull request #39 from askeing/download_desktop_client

Updated download_desktop_client.sh
Merge branch 'master' of https://github.com/Mozilla-TWQA/B2G-flash-tool