Delete vendored code and update CI to Go 1.13 (#158)

As the Go community transitions to using the modules ecosystem,
we want to only support one way of managing dependencies.
So this change moves to only using Go modules for dependency management.

This means that our effective minimum Go version increases to Go 1.11.
To account for this, we also update:
  - the documentation
  - Makefile
  - CI scripts

1 files changed, 0 insertions, 62 deletions

diff --git a/vendor/golang.org/x/sys/unix/gccgo.go b/vendor/golang.org/x/sys/unix/gccgo.go
deleted file mode 100644
index cd6f5a6..0000000
--- a/vendor/golang.org/x/sys/unix/gccgo.go
+++ /dev/null
@@ -1,62 +0,0 @@
-// Copyright 2015 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 gccgo
-// +build !aix
-
-package unix
-
-import "syscall"
-
-// We can't use the gc-syntax .s files for gccgo. On the plus side
-// much of the functionality can be written directly in Go.
-
-//extern gccgoRealSyscallNoError
-func realSyscallNoError(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r uintptr)
-
-//extern gccgoRealSyscall
-func realSyscall(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r, errno uintptr)
-
-func SyscallNoError(trap, a1, a2, a3 uintptr) (r1, r2 uintptr) {
-	syscall.Entersyscall()
-	r := realSyscallNoError(trap, a1, a2, a3, 0, 0, 0, 0, 0, 0)
-	syscall.Exitsyscall()
-	return r, 0
-}
-
-func Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.Errno) {
-	syscall.Entersyscall()
-	r, errno := realSyscall(trap, a1, a2, a3, 0, 0, 0, 0, 0, 0)
-	syscall.Exitsyscall()
-	return r, 0, syscall.Errno(errno)
-}
-
-func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err syscall.Errno) {
-	syscall.Entersyscall()
-	r, errno := realSyscall(trap, a1, a2, a3, a4, a5, a6, 0, 0, 0)
-	syscall.Exitsyscall()
-	return r, 0, syscall.Errno(errno)
-}
-
-func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno) {
-	syscall.Entersyscall()
-	r, errno := realSyscall(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9)
-	syscall.Exitsyscall()
-	return r, 0, syscall.Errno(errno)
-}
-
-func RawSyscallNoError(trap, a1, a2, a3 uintptr) (r1, r2 uintptr) {
-	r := realSyscallNoError(trap, a1, a2, a3, 0, 0, 0, 0, 0, 0)
-	return r, 0
-}
-
-func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.Errno) {
-	r, errno := realSyscall(trap, a1, a2, a3, 0, 0, 0, 0, 0, 0)
-	return r, 0, syscall.Errno(errno)
-}
-
-func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err syscall.Errno) {
-	r, errno := realSyscall(trap, a1, a2, a3, a4, a5, a6, 0, 0, 0)
-	return r, 0, syscall.Errno(errno)
-}