patch 7.4.1900

Problem:    Using CTRL-] in the help on "{address}." doesn't work.
Solution:   Recognize an item in {}. (Hirohito Higashi, closes #814)

src/version.c

@@ -753,6 +753,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1900,
 /**/
     1899,
 /**/