Add workaround for MSVC 2015 stdio changes.

Contributed by Peter Cawley.

src/msvcbuild.bat

@@ -14,7 +14,7 @@
 @if not defined INCLUDE goto :FAIL
 
 @setlocal
-@set LJCOMPILE=cl /nologo /c /O2 /W3 /D_CRT_SECURE_NO_DEPRECATE
+@set LJCOMPILE=cl /nologo /c /O2 /W3 /D_CRT_SECURE_NO_DEPRECATE /D_CRT_STDIO_INLINE=__declspec(dllexport)__inline
 @set LJLINK=link /nologo
 @set LJMT=mt /nologo
 @set LJLIB=lib /nologo /nodefaultlib