updated vendored kr/pty to the current master + Solaris support:

https://github.com/kr/pty/pull/64

vendor/github.com/kr/pty/ioctl_solaris.go

@@ -0,0 +1,30 @@
+package pty
+
+import (
+	"golang.org/x/sys/unix"
+	"unsafe"
+)
+
+const (
+	// see /usr/include/sys/stropts.h
+	I_PUSH  = uintptr((int32('S')<<8 | 002))
+	I_STR   = uintptr((int32('S')<<8 | 010))
+	I_FIND  = uintptr((int32('S')<<8 | 013))
+	// see /usr/include/sys/ptms.h
+	ISPTM   = (int32('P') << 8) | 1
+	UNLKPT  = (int32('P') << 8) | 2
+	PTSSTTY = (int32('P') << 8) | 3
+	ZONEPT  = (int32('P') << 8) | 4
+	OWNERPT = (int32('P') << 8) | 5
+)
+
+type strioctl struct {
+	ic_cmd    int32
+	ic_timout int32
+	ic_len    int32
+	ic_dp     unsafe.Pointer
+}
+
+func ioctl(fd, cmd, ptr uintptr) error {
+	return unix.IoctlSetInt(int(fd), uint(cmd), int(ptr))
+}