Godeps, vendor: convert dependency management to trash (#3198)

This commit converts the dependency management from Godeps to the vendor
folder, also switching the tool from godep to trash. Since the upstream tool
lacks a few features proposed via a few PRs, until those PRs are merged in
(if), use github.com/karalabe/trash.

You can update dependencies via trash --update.

All dependencies have been updated to their latest version.

Parts of the build system are reworked to drop old notions of Godeps and
invocation of the go vet command so that it doesn't run against the vendor
folder, as that will just blow up during vetting.

The conversion drops OpenCL (and hence GPU mining support) from ethash and our
codebase. The short reasoning is that there's noone to maintain and having
opencl libs in our deps messes up builds as go install ./... tries to build
them, failing with unsatisfied link errors for the C OpenCL deps.

golang.org/x/net/context is not vendored in. We expect it to be fetched by the
user (i.e. using go get). To keep ci.go builds reproducible the package is
"vendored" in build/_vendor.

1 files changed, 0 insertions, 76 deletions

diff --git a/Godeps/_workspace/src/golang.org/x/sys/unix/syscall.go b/Godeps/_workspace/src/golang.org/x/sys/unix/syscall.go
deleted file mode 100644
index 571e6993c..000000000
--- a/Godeps/_workspace/src/golang.org/x/sys/unix/syscall.go
+++ /dev/null
@@ -1,76 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build darwin dragonfly freebsd linux netbsd openbsd solaris
-
-// Package unix contains an interface to the low-level operating system
-// primitives.  OS details vary depending on the underlying system, and
-// by default, godoc will display OS-specific documentation for the current
-// system.  If you want godoc to display OS documentation for another
-// system, set $GOOS and $GOARCH to the desired system.  For example, if
-// you want to view documentation for freebsd/arm on linux/amd64, set $GOOS
-// to freebsd and $GOARCH to arm.
-// The primary use of this package is inside other packages that provide a more
-// portable interface to the system, such as "os", "time" and "net".  Use
-// those packages rather than this one if you can.
-// For details of the functions and data types in this package consult
-// the manuals for the appropriate operating system.
-// These calls return err == nil to indicate success; otherwise
-// err represents an operating system error describing the failure and
-// holds a value of type syscall.Errno.
-package unix
-
-import "unsafe"
-
-// ByteSliceFromString returns a NUL-terminated slice of bytes
-// containing the text of s. If s contains a NUL byte at any
-// location, it returns (nil, EINVAL).
-func ByteSliceFromString(s string) ([]byte, error) {
-	for i := 0; i < len(s); i++ {
-		if s[i] == 0 {
-			return nil, EINVAL
-		}
-	}
-	a := make([]byte, len(s)+1)
-	copy(a, s)
-	return a, nil
-}
-
-// BytePtrFromString returns a pointer to a NUL-terminated array of
-// bytes containing the text of s. If s contains a NUL byte at any
-// location, it returns (nil, EINVAL).
-func BytePtrFromString(s string) (*byte, error) {
-	a, err := ByteSliceFromString(s)
-	if err != nil {
-		return nil, err
-	}
-	return &a[0], nil
-}
-
-// Single-word zero for use when we need a valid pointer to 0 bytes.
-// See mkunix.pl.
-var _zero uintptr
-
-func (ts *Timespec) Unix() (sec int64, nsec int64) {
-	return int64(ts.Sec), int64(ts.Nsec)
-}
-
-func (tv *Timeval) Unix() (sec int64, nsec int64) {
-	return int64(tv.Sec), int64(tv.Usec) * 1000
-}
-
-func (ts *Timespec) Nano() int64 {
-	return int64(ts.Sec)*1e9 + int64(ts.Nsec)
-}
-
-func (tv *Timeval) Nano() int64 {
-	return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000
-}
-
-func TimevalToNsec(tv Timeval) int64 { return int64(tv.Sec)*1e9 + int64(tv.Usec)*1e3 }
-
-// use is a no-op, but the compiler cannot see that it is.
-// Calling use(p) ensures that p is kept live until that point.
-//go:noescape
-func use(p unsafe.Pointer)