patch 9.1.0190: complete_info() returns wrong order of items

Problem:  complete_info() returns wrong order of items
          (after v9.0.2018)
Solution: Revert Patch v9.0.2018
          (Girish Palya)

bug fix: complete_info() gives wrong results

1) complete_info() reverses list of items during <c-p>
2) 'selected' item index is wrong during <c-p>
3) number of items returnd can be wrong

Solution:
- Decouple 'cp_number' from 'selected' index since they need not be
  correlated
- Do not iterate the list backwards
- Add targeted tests

Regression introduced by https://github.com/vim/vim/commit/69fb5afb3bc9da24c2fb0eafb0027ba9c6502fc2
Following are unnecessary commits to patch problems from above:
https://github.com/vim/vim/commit/fef66301665027f1801a18d796f74584666f41ef
https://github.com/vim/vim/commit/daef8c74375141974d61b85199b383017644978c

All the tests from above commits are retained though.

fixes: #14204
closes: #14241

Signed-off-by: Girish Palya <girishji@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 3affeff..2963827 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    190,
+/**/
     189,
 /**/
     188,