ported bugfixes by tanguy.pruvot@gmail.com from https://github.com/tpruvot/android_external_droidsshd
(more try/catch, service startup, released boot receiver, status management)
but preserved the dropbear binaries and related code from https://github.com/mestre/droidsshd

added intent to stop dropbear daemon by calling br.com.bott.droidsshd.system.DroidSSHdService with the content "stop"
(so KebabApps' Llama can start/stop the service depending on location profiles)

added sftp-server that rgeorgi@gmail.com posted in from http://code.google.com/p/droidsshd/issues/detail?id=1

Added intentExtra on FileChooser so we can choose different 'root' (initial) directories to pick a particular filename (instead of hard-coded '/sdcard/')

changed/tweaked under preferences