Important bugfixes: * In option parser test `@ARGV' not `length @ARGV'. Closes:#795710. * Properly quote package name when constructing regexp in complete_file_from_dsc. Closes:#795736. Also, grep the code for likely similar problems elsewhere and improve a (harmless) instance in dgit-repos-server.
Other improvements: * If a .orig in .. is a symlink, hardlink the link target into our private unpack directory, rather than the link itself (since latter won't work if the symlink is relative). Closes:#795665. * Test suite: Fix t-restriction-x-dgit-schroot-build in non-adt mode. * Infrastructure: Improve an error message in dgit-repos-policy-debian.