[xml] win32\VC10\config.h and VS 2015

[Bruce Dawson <brucedawson google com>]

The config.h file in win32\VC10 is incompatible with VS 2015 because VS 2015 provides an implementation of snprintf and prohibits using the preprocessor to define it. Therefor an ifdef check is needed around that definition in VC10\config.h. Here is a patch that is compatible with the change that we made to Chromium's copy:

diff --git a/win32/VC10/config.h b/win32/VC10/config.h

index 8629944..891b57e 100644

--- a/win32/VC10/config.h

+++ b/win32/VC10/config.h

@@ -96,7 +96,9 @@ static int isnan (double d) {

 #if defined(_MSC_VER)

 #define mkdir(p,m) _mkdir(p)

+#if _MSC_VER < 1900 // Cannot define this in VS 2015 and above!

 #define snprintf _snprintf

+#endif

 #if _MSC_VER < 1500

 #define vsnprintf(b,c,f,a) _vsnprintf(b,c,f,a)

 #endif

It would be great to get that same patch in libxml2, and other developers will need it if they use VC10\config.h.

--

Bruce Dawson