patch 8.2.0080: globals using INIT4() are not in the tags file

Problem:    Globals using INIT4() are not in the tags file.
Solution:   Adjust the tags command.
diff --git a/src/auto/configure b/src/auto/configure
index b7c1c11..9930495 100755
--- a/src/auto/configure
+++ b/src/auto/configure
@@ -14306,11 +14306,11 @@
 $as_echo_n "checking how to create tags... " >&6; }
 test -f tags && mv tags tags.save
 if (eval ctags --version /dev/null | grep Exuberant) < /dev/null 1>&5 2>&1; then
-  TAGPRG="ctags -I INIT+ --fields=+S"
+  TAGPRG="ctags -I INIT+,INIT2+,INIT3+,INIT4+,INIT5+ --fields=+S"
 elif (eval exctags --version /dev/null | grep Exuberant) < /dev/null 1>&5 2>&1; then
-  TAGPRG="exctags -I INIT+ --fields=+S"
+  TAGPRG="exctags -I INIT+,INIT2+,INIT3+,INIT4+,INIT5+ --fields=+S"
 elif (eval exuberant-ctags --version /dev/null | grep Exuberant) < /dev/null 1>&5 2>&1; then
-  TAGPRG="exuberant-ctags -I INIT+ --fields=+S"
+  TAGPRG="exuberant-ctags -I INIT+,INIT2+,INIT3+,INIT4+,INIT5+ --fields=+S"
 else
   TAGPRG="ctags"
   (eval etags	   /dev/null) < /dev/null 1>&5 2>&1 && TAGPRG="etags"