arogue7, xrogue: begin using autoconf.

File locations can be customized via './configure'.  'make install'
does not work yet.  Options for wizard mode and load checks may not do
what is intended.

Fun fact: there's an enlightening epigraph in the introduction to the
autoconf manual.

arogue7/rogue.h

@@ -33,6 +33,10 @@ extern char toupper();
 #define exfork fork	/* Standard fork with no paging available */
 #endif
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 /*
  * Maximum number of different things
  */