Default to building Win32 libraries

[berney]

Fix linker errors due to missing symbols by defaulting to building Win32 libraries.

[mubix]

I needed to change:

MFLAGS=/p:Configuration=Release /nologo /m /v:q

to:

MFLAGS=/p:Configuration=Release /p:Platform=Win32 /nologo /m /v:q

as well to get it to compile