vim-patch:7.4.1976

Problem:    Number variables are not 64 bits while they could be.
Solution:   Add the num64 feature. (Ken Takata)

22fcfad292

src/nvim/version.c

@@ -468,7 +468,7 @@ static const int included_patches[] = {
   // 1979,
   // 1978,
   // 1977,
-  // 1976,
+  1976,
   1975,
   // 1974 NA
   1973,