filesystems/fuse-ntfs-3g: Use libfuse on NetBSD

Due to not fully understood reasons, perhaps use of the low-level FUSE
API, or perhaps using a different FUSE high-level API version, this
package fails to build with NetBSD's librefuse.  It does build when
linked against filesystems/fuse, so do that.

Not tested, but building is an improvement over not building.
(This commit only changes the build on NetBSD.)

(gdt)