vim-patch: Mark patches as NA

These changes do not apply because a) they apply to removed code,
or b) they address problems to do with #ifdef'ed code.

Marks the following patches as NA:
- 7.4.610, https://github.com/vim/vim/commit/v7-4-610
- 7.4.618, https://github.com/vim/vim/commit/v7-4-618
- 7.4.619, https://github.com/vim/vim/commit/v7-4-619
- 7.4.621, https://github.com/vim/vim/commit/v7-4-621
- 7.4.622, https://github.com/vim/vim/commit/v7-4-622
- 7.4.625, https://github.com/vim/vim/commit/v7-4-625
- 7.4.626, https://github.com/vim/vim/commit/v7-4-626
- 7.4.638, https://github.com/vim/vim/commit/v7-4-638
- 7.4.647, https://github.com/vim/vim/commit/v7-4-647
- 7.4.648, https://github.com/vim/vim/commit/v7-4-648
- 7.4.650, https://github.com/vim/vim/commit/v7-4-650

One trivial change had already been included, so the patch number was
uncommented:

- 7.4.599, https://github.com/vim/vim/commit/v7-4-599

src/nvim/version.c

@@ -133,10 +133,10 @@ static int included_patches[] = {
   653,
   //652,
   //651,
-  //650,
+  //650 NA
   //649,
-  //648,
-  //647,
+  //648 NA
+  //647 NA
   //646,
   //645,
   //644,
@@ -145,7 +145,7 @@ static int included_patches[] = {
   //641,
   //640,
   //639,
-  //638,
+  //638 NA
   637,
   636,
   //635,
@@ -157,15 +157,15 @@ static int included_patches[] = {
   //629,
   //628,
   //627,
-  //626,
-  //625,
+  //626 NA
+  //625 NA
   //624,
   //623,
-  //622,
-  //621,
+  //622 NA
+  //621 NA
   //620,
-  //619,
-  //618,
+  //619 NA
+  //618 NA
   //617,
   //616,
   615,
@@ -173,7 +173,7 @@ static int included_patches[] = {
   //613,
   //612,
   //611,
-  //610,
+  //610 NA
   //609,
   //608,
   //607,
@@ -184,7 +184,7 @@ static int included_patches[] = {
   //602,
   601,
   //600,
-  //599,
+  599,
   //598,
   //597,
   //596,