vim-patch:7.4.1700

Problem:    Equivalence classes are not properly tested.
Solution:   Add tests for multi-byte and latin1. Fix an error. (Owen Leibman)

22e421549d

src/regexp.c changes weren't applied because they're specific to EBCDIC
handling, which has been dropped from nvim.

The latin1-specific tests were also removed since neovim intends to
remove the ability to have 'encoding' set to anything other than utf8.

src/nvim/version.c

@@ -577,7 +577,7 @@ static int included_patches[] = {
   1703,
   // 1702,
   // 1701,
-  // 1700,
+  1700,
   // 1699,
   // 1698 NA
   // 1697,