[glib/glib-2-50] build/win32/detectenv-msvc.mak: Support Visual Studio 2017

[Chun-wei Fan <fanchunwei src gnome org>]

commit 57eb9512c7ab5749143defc01a8cf9a9875f52df
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Fri Feb 17 17:44:16 2017 +0800

    build/win32/detectenv-msvc.mak: Support Visual Studio 2017
    
    Add the _MSC_VER check string so that items using this (such as
    projects supporting Visual Studio builds using NMake and introspection
    builds on MSVC builds) can be done with Visual Studio 2017.

 build/win32/detectenv-msvc.mak |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/build/win32/detectenv-msvc.mak b/build/win32/detectenv-msvc.mak
index c23e444..e4548d7 100644
--- a/build/win32/detectenv-msvc.mak
+++ b/build/win32/detectenv-msvc.mak
@@ -40,8 +40,10 @@ VSVER = 10
 VSVER = 11
 !elseif $(VCVERSION) > 1799 && $(VCVERSION) < 1900
 VSVER = 12
-!elseif $(VCVERSION) > 1899 && $(VCVERSION) < 2000
+!elseif $(VCVERSION) > 1899 && $(VCVERSION) < 1910
 VSVER = 14
+!elseif $(VCVERSION) > 1909 && $(VCVERSION) < 2000
+VSVER = 15
 !else
 VSVER = 0
 !endif