updated for version 7.3.187
Problem:    The RISC OS port has obvious errors and is not being maintained.
Solution:   Remove the RISC OS files and code.
diff --git a/src/ascii.h b/src/ascii.h
index b920d41..5256fc3 100644
--- a/src/ascii.h
+++ b/src/ascii.h
@@ -183,11 +183,6 @@
 # define PATHSEP	psepc
 # define PATHSEPSTR	pseps
 #else
-# ifdef RISCOS
-#  define PATHSEP	'.'
-#  define PATHSEPSTR	"."
-# else
-#  define PATHSEP	'/'
-#  define PATHSEPSTR	"/"
-# endif
+# define PATHSEP	'/'
+# define PATHSEPSTR	"/"
 #endif