patch 7.4.1963
Problem:    Running Win32 Vim in mintty does not work.
Solution:   Detect mintty and give a helpful error message. (Ken Takata)
diff --git a/Filelist b/Filelist
index d7fbecb..a6b159e 100644
--- a/Filelist
+++ b/Filelist
@@ -317,6 +317,8 @@
 		src/if_ole.h \
 		src/if_ole.idl \
 		src/if_perl_msvc/stdbool.h \
+		src/iscygpty.c \
+		src/iscygpty.h \
 		src/iid_ole.c \
 		src/os_dos.h \
 		src/os_w32dll.c \