conf.c: Correct parsing of multiline values

KEY = VALUE1
KEY = VALUE2
was incorrectly interpreted.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Support for exclude paths

In /etc/skyldav.conf paths not to be scanned may be specified as
EXCLUDE_PATH = /noscan_path

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>