patch 8.2.0081: MS-Windows also need the change to support INIT4()

Problem:    MS-Windows also need the change to support INIT4().
Solution:   Add the ctags arguments. (Ken Takata)
diff --git a/src/Make_cyg_ming.mak b/src/Make_cyg_ming.mak
index 32fa35c..3c878cb 100644
--- a/src/Make_cyg_ming.mak
+++ b/src/Make_cyg_ming.mak
@@ -115,7 +115,7 @@
 
 ifndef CTAGS
 # this assumes ctags is Exuberant ctags
-CTAGS = ctags -I INIT+ --fields=+S
+CTAGS = ctags -I INIT+,INIT2+,INIT3+,INIT4+,INIT5+ --fields=+S
 endif
 
 # Link against the shared version of libstdc++ by default.  Set
diff --git a/src/Make_mvc.mak b/src/Make_mvc.mak
index 2718a05..8694f74 100644
--- a/src/Make_mvc.mak
+++ b/src/Make_mvc.mak
@@ -334,7 +334,7 @@
 
 !ifndef CTAGS
 # this assumes ctags is Exuberant ctags
-CTAGS = ctags -I INIT+ --fields=+S
+CTAGS = ctags -I INIT+,INIT2+,INIT3+,INIT4+,INIT5+ --fields=+S
 !endif
 
 !ifndef CSCOPE
diff --git a/src/version.c b/src/version.c
index 626c382..cff754f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -743,6 +743,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    81,
+/**/
     80,
 /**/
     79,