Fix build failure with clang 8:
error: invalid suffix on literal; C++11 requires a space between literal and identifier [-Wreserved-user-defined-literal]

https://github.com/rene0/bf2c/pull/1
--- bf2c.cc.orig	2013-06-12 17:11:38.000000000 -0500
+++ bf2c.cc	2019-10-07 07:14:47.000000000 -0500
@@ -57,7 +57,7 @@
 	pt = NULL;
 	infname = outfname = invchar = NULL;
 
-	printf("bf2c.cc "VERSION" Copyright (c) 2002-"ENDYEAR" Rene Ladan <r.c.ladan@gmail.com>\n\n"
+	printf("bf2c.cc " VERSION " Copyright (c) 2002-" ENDYEAR " Rene Ladan <r.c.ladan@gmail.com>\n\n"
 		"Optimizing BrainFuck to C compiler.\n\n");
 
 	while ((opt = getopt(argc,argv,"i:o:hs:r:")) != -1) {