bugfix: config/VirtualBox_VMs/: switched from symlinks to hard links, because svn does not follow symlinks

added config/VirtualBox_VMs/, containing the .vbox settings and password.txt (a non-empty password is needed for some system commands)

moved everything into /trunk/ to create the standard svn layout, for use with tools that require this (eg. git-svn). IMPORTANT: do NOT do an `svn up`. instead, re-use your working copy's existing files with `svn switch` (http://svnbook.red-bean.com/en/1.6/svn.ref.svn.c.switch.html).

root Makefile: VegBIEN DB: mk_db: Added command to import arbitrary DB users from a config file

config/: Set svn:ignore to exclude *password files

Removing config/bien_read_password from version control

Removing config/bien_password from version control

Added config/bien_read_password

Moved bien_password to new config dir