Fix nofuse build tags syntax

core/commands/mount_nofuse.go

-// +build (linux darwin freebsd) and nofuse
+// +build linux darwin freebsd
+// +build nofuse
 
 package commands
 

core/commands/mount_unix.go

-// +build (linux darwin freebsd) and !nofuse
+// +build linux darwin freebsd
+// +build !nofuse
 
 package commands
 

fuse/ipns/mount_unix.go

-// +build (linux darwin freebsd) and !nofuse
+// +build linux darwin freebsd
+// +build !nofuse
 
 package ipns
 

fuse/readonly/mount_unix.go

-// +build (linux darwin freebsd) and !nofuse
+// +build linux darwin freebsd
+// +build !nofuse
 
 package readonly
 

fuse/readonly/readonly_unix.go

-// +build (linux darwin freebsd) and !nofuse
+// +build linux darwin freebsd
+// +build !nofuse
 
 // package fuse/readonly implements a fuse filesystem to access files
 // stored inside of ipfs.