Add missing profile when forcing cross compilation with MSVC12 on Windows 10 64 bit

profiles/win10-msvc12_x86-x86-shared

+[settings]
+arch=x86
+build_type=Release
+compiler=msvc
+compiler.runtime=dynamic
+compiler.version=180
+os=Windows
+
+[options]
+*:shared=True
+
+[buildenv]
+PATH=+(path)D:\Python\Python36-32
+PYTHONHOME=D:\Python\Python36-32

profiles/win10-msvc12_x86-x86-static

+[settings]
+arch=x86
+build_type=Release
+compiler=msvc
+compiler.runtime=static
+compiler.version=180
+os=Windows
+
+[buildenv]
+PATH=+(path)D:\Python\Python36-32
+PYTHONHOME=D:\Python\Python36-32