Use HOME before /etc/passwd to find id_dropbear (#137) Currently dbclient uses the value of HOME by default when looking for ~/.ssh/known_hosts, falling back to /etc/passwd if HOME is not set (so that people can work around broken values in /etc/passwd). However, when locating the default authentication key (defaults to ~/.ssh/id_dropbear), paths not starting with / are always prefixed with the value from /etc/passwd. Make the behaviour consistent by adjusting expand_homedir_path to use the value of HOME, falling back to /etc/passwd if HOME is not set.

*~
*.o
*.a
*.da
*.bb
*.bbg
*.prof
.*.swp
/autom4te.cache
/config.log
/config.status
/dbclient
/dropbear
/dropbearconvert
/dropbearkey
/dropbearmulti
/fuzzcorpus
/fuzzer-*
/fuzzer-*.options
/scp
/scp-progress
Makefile
config.h
default_options_guard.h
tags
.pytest*
*.pyc
/test/venv