vendor dependencies, make some changes to how input is done

vendor/github.com/ebitengine/purego/internal/fakecgo/freebsd.go

@@ -0,0 +1,27 @@
+// Copyright 2010 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.
+
+//go:build freebsd && !cgo
+
+package fakecgo
+
+import _ "unsafe" // for go:linkname
+
+// Supply environ and __progname, because we don't
+// link against the standard FreeBSD crt0.o and the
+// libc dynamic library needs them.
+
+// Note: when building with cross-compiling or CGO_ENABLED=0, add
+// the following argument to `go` so that these symbols are defined by
+// making fakecgo the Cgo.
+//   -gcflags="github.com/ebitengine/purego/internal/fakecgo=-std"
+
+//go:linkname _environ environ
+//go:linkname _progname __progname
+
+//go:cgo_export_dynamic environ
+//go:cgo_export_dynamic __progname
+
+var _environ uintptr
+var _progname uintptr