Always print the program name

This is generally very useful for sbase, especially when we
hit some case that is not implemented and we want to know which
program failed.

util/eprintf.c

@@ -33,7 +33,7 @@ enprintf(int status, const char *fmt, ...)
 void
 venprintf(int status, const char *fmt, va_list ap)
 {
-	/*fprintf(stderr, "%s: ", argv0);*/
+	fprintf(stderr, "%s: ", argv0);
 
 	vfprintf(stderr, fmt, ap);
 
@@ -50,6 +50,8 @@ weprintf(const char *fmt, ...)
 {
 	va_list ap;
 
+	fprintf(stderr, "%s: ", argv0);
+
 	va_start(ap, fmt);
 	vfprintf(stderr, fmt, ap);
 	va_end(ap);