updated for version 7.4.488

Problem:    test_mapping fails for some people.
Solution:   Set the 'encoding' option. (Ken Takata)

src/testdir/test_mapping.in

@@ -3,6 +3,7 @@ Test for mappings and abbreviations
 STARTTEST
 :so small.vim
 :so mbyte.vim
+:set encoding=utf-8
 : " abbreviations with р (0x80) should work
 :inoreab чкпр   vim
 GAчкпр 

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    488,
 /**/
     487,
 /**/