Enable our sig{segv,bus,abrt} panic handlers by default.

bin/varnishd/mgt/mgt_param_tbl.c

@@ -419,7 +419,7 @@ struct parspec mgt_parspec[] = {
 		"Install a signal handler which tries to dump debug "
 		"information on segmentation and buserror faults.",
 		MUST_RESTART,
-		"off", "bool" },
+		"on", "bool" },
 	{ "vcl_dir", tweak_string, &mgt_vcl_dir,
 		NULL, NULL,
 		"Directory from which relative VCL filenames (vcl.load and "

bin/varnishtest/tests/c00057.vtc

@@ -6,7 +6,6 @@ server s1 {
 } -start
 
 varnish v1 -cliok "param.set vcc_allow_inline_c true"
-varnish v1 -cliok "param.set sigsegv_handler on"
 varnish v1 -vcl+backend {
 	C{
 #include <signal.h>