This local autotools logic was put in place in
9e24b9c7afbcb81120af4cf3f6cdee49a06d8224 (in 2012) which disabled it for
Windows unconditionally. Testing reveals that it actually works with
tested toolchains (mingw-w64 and CI ones), so let's allow this build
feature on that platform. Bringing this in sync with CMake, which already
supported this.
Reviewed-by: Jay Satiro
Closes#9586
61c7ccab83