Fix daemon-conf invalid failures

The daemon-conf test would fail on my system if there was a system libvirtd
running.  In the course of troubleshooting that problem, I discovered that the
daemon-conf script would always fail if run by itself because it found the line:

\# that each "PARAMETER = VALUE" line in this file have the parameter

which it mistook for a line containing a parameter.  I have changed the test to
avoid mistaking a line containing \"PARAMETER = VALUE\" for a parameter line.

The corrupted config tests turned out to be failing because the test daemon was
discovering the pid file from the running daemon and exiting before it processed
the test config file.  Specifying the pid file for the corrupt config tests in
the same way as for the valid config test solved that problem.

tests/daemon-conf

@@ -19,7 +19,7 @@ grep '^#define WITH_QEMU 1' "$CONFIG_HEADER" > /dev/null ||
 conf="$abs_top_srcdir/daemon/libvirtd.conf"
 
 # Ensure that each commented out PARAMETER = VALUE line has the expected form.
-grep '[a-z_]  *=  *[^ ]' "$conf" | grep -vE '^#[a-z_]+ = ' \
+grep -v '\"PARAMETER = VALUE\"' "$conf" | grep '[a-z_]  *=  *[^ ]' | grep -vE '^#[a-z_]+ = ' \
   && { echo "$0: found unexpected lines (above) in $conf" 1>&2; exit 1; }
 
 # Start with the sample libvirtd.conf file, uncommenting all real directives.
@@ -45,7 +45,7 @@ while :; do
   esac
 
   # Run libvirtd, expecting it to fail.
-  $abs_top_builddir/daemon/libvirtd --config=$f 2> err && fail=1
+  $abs_top_builddir/daemon/libvirtd --pid-file=pid-file --config=$f 2> err && fail=1
 
   case $rhs in
     # '"'*) msg='should be a string';;