patch 8.1.0226: too many #ifdefs

Problem:    Too many #ifdefs.
Solution:   Graduate the +vreplace feature, it's not much code and quite a few
            #ifdefs.
diff --git a/runtime/doc/various.txt b/runtime/doc/various.txt
index bd2b35e..48d63cd 100644
--- a/runtime/doc/various.txt
+++ b/runtime/doc/various.txt
@@ -461,7 +461,7 @@
 N  *+virtualedit*	|'virtualedit'|
 S  *+visual*		Visual mode |Visual-mode| Always enabled since 7.4.200.
 N  *+visualextra*	extra Visual mode commands |blockwise-operators|
-N  *+vreplace*		|gR| and |gr|
+T  *+vreplace*		|gR| and |gr|
    *+vtp*		on MS-Windows console: support for 'termguicolors'
 N  *+wildignore*	|'wildignore'|
 N  *+wildmenu*		|'wildmenu'|