patch 8.2.0148: mapping related function in wrong source file

Problem:    Mapping related function in wrong source file.
Solution:   Move the function.  Add a few more test cases. (Yegappan
            Lakshmanan, closes #5528)
diff --git a/src/version.c b/src/version.c
index 80c9642..6dfc66d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -743,6 +743,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    148,
+/**/
     147,
 /**/
     146,