contrib: fixed up sample configuration files a bit

Fixed up some of the biggest problems in the sample configuration files under
contrib, like program_override() with a colon, which is not needed, etc.

Also, removed deprecated log_prefix() options.

contrib/cygwin-packaging/syslog-ng-config

@@ -220,7 +220,7 @@ source applications {
 };
 
 source kernel {
-  file("/dev/kmsg", program_override("kernel: "));
+  file("/dev/kmsg", program_override("kernel"));
 };
 
 destination messages {

contrib/fedora-packaging/syslog-ng.conf

@@ -41,7 +41,7 @@ options {
 };
 
 source s_sys {
-    file ("/proc/kmsg" log_prefix("kernel: "));
+    file ("/proc/kmsg" program_override("kernel"));
     unix-stream ("/dev/log");
     internal();
     # udp(ip(0.0.0.0) port(514));

contrib/rhel-packaging/syslog-ng.conf

@@ -14,7 +14,7 @@ log { source(s_internal); destination(d_syslognglog); };
 #
 #source s_local {
 #	unix-dgram("/dev/log");
-#	file("/proc/kmsg" log_prefix("kernel:"));
+#	file("/proc/kmsg" program_override("kernel"));
 #};
 #
 # Local filters

contrib/syslog-ng.conf.RedHat

@@ -10,10 +10,10 @@
 # Updated by Frank Crawford (<[email protected]>) - 10 Aug 2002
 # 	- for Red Hat 7.3
 #	- totally do away with klogd
-#	- add message "kernel:" as is done with klogd.
+#	- add message "kernel" as is done with klogd.
 #
 # Updated by Frank Crawford (<[email protected]>) - 22 Aug 2002
-#	- use the log_prefix option as per Balazs Scheidler's email
+#	- use the program_override option as per Balazs Scheidler's email
 #
 
 options { sync (0);
@@ -36,7 +36,7 @@ options { sync (0);
 # libc and syslog clients generally automatically detect the socket type,
 # so you are free to decide which of unix-stream or unix-dgram you want to use.
 #
-source s_sys { file ("/proc/kmsg" log_prefix("kernel: ")); unix-stream ("/dev/log"); internal(); };
+source s_sys { file ("/proc/kmsg" program_override("kernel")); unix-stream ("/dev/log"); internal(); };
 
 destination d_cons { file("/dev/console"); };
 destination d_mesg { file("/var/log/messages"); };

contrib/syslog-ng.conf.doc

@@ -283,7 +283,7 @@ options
 #  source src 
 #    {
 #      internal();
-#      file("/proc/kmsg" log_prefix("kernel: "));
+#      file("/proc/kmsg" program_override("kernel"));
 #      tcp(ip(127.0.0.1) port(4800) keep-alive(yes));
 #      udp();
 #      unix-stream("/dev/log");
@@ -304,7 +304,7 @@ source s_internal
   { internal(); };
 
 source s_kernel
-  { file("/proc/kmsg" log_prefix("kernel: ")); };
+  { file("/proc/kmsg" program_override("kernel")); };
 
 source s_tcp
   { tcp(port(4800) keep-alive(yes) max_connections(100)); };

debian/syslog-ng.conf

@@ -77,7 +77,7 @@ source s_all {
         # function to send logs to)
         unix-stream("/dev/log");
         # messages from the kernel
-        file("/proc/kmsg" log_prefix("kernel: "));
+        file("/proc/kmsg" program_override("kernel"));
         # use the following line if you want to receive remote UDP logging messages
         # (this is equivalent to the "-r" syslogd flag)
         # udp();