patch 8.0.1183: MS-Windows build instructions are outdated

Problem:    MS-Windows build instructions are outdated.
Solution:   Update instructions for MSVC 2015.  Update the build script.
diff --git a/Filelist b/Filelist
index aaa6ba7..8b3449c 100644
--- a/Filelist
+++ b/Filelist
@@ -406,6 +406,7 @@
 		src/msvcsetup.bat \
 		src/msvc2008.bat \
 		src/msvc2010.bat \
+		src/msvc2015.bat \
 		src/dimm.idl \
 		src/dlldata.c \
 		src/dosinst.c \