One of the test scripts dynamically creates and executes a bash script,
which attempts to use `/usr/bin/env bash`. This patches the file to
use the stdenv's shell instead.
Otherwise, the only way this could have worked was by building go_1_6
outside of the sandbox.
The following parameters are now available:
* hardeningDisable
To disable specific hardening flags
* hardeningEnable
To enable specific hardening flags
Only the cc-wrapper supports this right now, but these may be reused by
other wrappers, builders or setup hooks.
cc-wrapper supports the following flags:
* fortify
* stackprotector
* pie (disabled by default)
* pic
* strictoverflow
* format
* relro
* bindnow
