patch 8.2.4082: check for autoload file name and prefix fails

Problem:    Check for autoload file name and prefix fails. (Christian J.
            Robinson)
Solution:   Only lower case the prefix on systems where the file name is not
            case sensitive.
diff --git a/src/version.c b/src/version.c
index 67a258a..2a2c3de 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4082,
+/**/
     4081,
 /**/
     4080,