Add support for debug builds.
Run Cygwin setup to simplify it
update desktop b2g builds list
Merge pull request #298 from askeing/update_desktopb2g_list

update desktop b2g builds list
Merge pull request #281 from davehunt/debug

Add support for debug builds
Improve GUI of flash_pvt
Merge pull request #297 from SteveALee/shallowflashbat

Runs Cygwin setup to simplify it's use
Merge pull request #300 from askeing/improve_flash_pvt

Improve GUI of flash_pvt