PANICTRACE (stacktrace on panic or signal) + bits

On crash signal or panic(), use a configurable method to get a stacktrace
the user can easily report to us.  Currently only for Unix/Linux and only
ifdef BETA.  Hopefully ports can add additional methods.

Bits:
- linux hints file had PREFIX definition in the wrong place
- sample sysconf file used wrong delimiter for WIZARDS
- fix grammar error in support message when using sysconf.wizards
- options.c comment typo
- capitalize "Crash test" output from #panic command

src/sys.c

@@ -24,11 +24,27 @@ sys_early_init(){
 	sysopt.pointsmin = POINTSMIN;
 	sysopt.pers_is_uid = PERS_IS_UID;
 
-			/* sanity checks */
+		/* sanity checks */
 	if(PERSMAX<1) sysopt.persmax = 1;
 	if(ENTRYMAX<10) sysopt.entrymax = 10;
 	if(POINTSMIN<1) sysopt.pointsmin = 1;
 	if(PERS_IS_UID != 0 && PERS_IS_UID != 1)
 		panic("config error: PERS_IS_UID must be either 0 or 1");
+
+#ifdef PANICTRACE
+		/* panic options */
+	sysopt.gdbpath = NULL;
+# ifdef BETA
+	sysopt.panictrace_gdb = 1;
+#  ifdef PANICTRACE_GLIBC
+	sysopt.panictrace_glibc = 2;
+#  endif
+# else
+	sysopt.panictrace_gdb = 0;
+#  ifdef PANICTRACE_GLIBC
+	sysopt.panictrace_glibc = 0;
+#  endif
+# endif
+#endif
 }