Problem: Visual Studio 2015 is not recognized.
Solution: Add the version numbers to the makefile. (Taro Muraoka)
!if "$(_NMAKE_VER)" == "12.00.21005.1"
MSVCVER = 12.0
!endif
-!if ("$(_NMAKE_VER)" == "14.00.22609.0") || ("$(_NMAKE_VER)" == "14.00.22816.0")
+!if ("$(_NMAKE_VER)" == "14.00.22609.0") || ("$(_NMAKE_VER)" == "14.00.22816.0") || ("$(_NMAKE_VER)" == "14.00.23026.0")
MSVCVER = 14.0
!endif
!endif
static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 794,
/**/
793,
/**/