vim-patch:7.4.1923

Problem:    Command line editing is not tested much.
Solution:   Add tests for expanding the file name and 'wildmenu'.

ae3150ec8d

The test_cmdline.vim tests were ported in 23f591dba0 and thus
should have marked 1923 as applied. The test_cmdline.vim invocation
has been moved from test_alot.vim to src/nvim/testdir/Makefile to
better accord with the upstream code.

src/nvim/version.c

@@ -519,7 +519,7 @@ static int included_patches[] = {
   // 1926 NA
   // 1925 NA
   // 1924 NA
-  // 1923,
+  1923,
   // 1922 NA
   // 1921 NA
   // 1920 NA