Merge pull request #2627 from erde74/master

add NetBSD support

core/commands/mount_nofuse.go

-// +build linux darwin freebsd
+// +build linux darwin freebsd netbsd
 // +build nofuse
 
 package commands

core/commands/mount_unix.go

-// +build linux darwin freebsd
+// +build linux darwin freebsd netbsd
 // +build !nofuse
 
 package commands

fuse/ipns/mount_unix.go

-// +build linux darwin freebsd
+// +build linux darwin freebsd netbsd
 // +build !nofuse
 
 package ipns

fuse/node/mount_nofuse.go

-// +build linux darwin freebsd
+// +build linux darwin freebsd netbsd
 // +build nofuse
 
 package node

fuse/node/mount_unix.go

-// +build linux darwin freebsd
+// +build linux darwin freebsd netbsd
 // +build !nofuse
 
 package node

fuse/readonly/mount_unix.go

-// +build linux darwin freebsd
+// +build linux darwin freebsd netbsd
 // +build !nofuse
 
 package readonly

fuse/readonly/readonly_unix.go

-// +build linux darwin freebsd
+// +build linux darwin freebsd netbsd
 // +build !nofuse
 
 package readonly