zfs: use getopt_long for mount.zfs.

srcpkgs/zfs/patches/getopt-musl.patch

@@ -0,0 +1,25 @@
+mount.zfs is called by convention (and util-linux) with arguments last, i.e.
+  % mount.zfs <dataset> <mountpoint> -o <options>
+Use getopt_long so musl will permute arguments.
+
+Passing 0 as long_opts is unspecified, but safe for glibc and musl getopt_long.
+
+--- a/cmd/mount_zfs/mount_zfs.c	2016-01-14 13:55:43.352951688 +0100
++++ b/cmd/mount_zfs/mount_zfs.c	2016-01-14 13:53:35.685221569 +0100
+@@ -33,6 +33,7 @@
+ #include <libzfs.h>
+ #include <locale.h>
+ #include <fcntl.h>
++#include <getopt.h>
+ 
+ #define	ZS_COMMENT	0x00000000	/* comment */
+ #define	ZS_ZFSUTIL	0x00000001	/* caller is zfs(8) */
+@@ -390,7 +391,7 @@
+ 	opterr = 0;
+ 
+ 	/* check options */
+-	while ((c = getopt(argc, argv, "sfnvo:h?")) != -1) {
++	while ((c = getopt_long(argc, argv, "sfnvo:h?", 0, 0)) != -1) {
+ 		switch (c) {
+ 		case 's':
+ 			sloppy = 1;

srcpkgs/zfs/template

@@ -1,7 +1,7 @@
 # Template file for 'zfs'
 pkgname=zfs
 version=0.6.5.4
-revision=3
+revision=4
 patch_args="-Np1"
 wrksrc="${pkgname}-${pkgname}-${version/r/-}"
 build_style=gnu-configure