v0.0.67: Fix ppc64le PPA/COPR builds

v0.0.66: Fixes for PPAs and copr

v0.0.65: Change build list

Remove solaris build because it's breaking and I'm not familiar with
solaris. Add ppc64/ppc64le builds for Linux.

No code changes.

v0.0.63: Fix UUID library build issue

v0.0.62: Miscellaneous tweaks

Updated Let's Encrypt agreement URL in example response file.

Now builds for current Go 1.x version in Travis rather than Go 1.8.

More error details are now available for challenge errors in the acmeapi
package.

Error when trying to prompt the user in non-interactive mode now advises
user to remove --batch flag.

v0.0.61: Miscellaneous fixes

Bugfixes:

- Fix OCSP URL regexps for Let's Encrypt.
- Documentation: The Let's Encrypt client is now called "certbot".
- Switch to building with Go 1.8.
- Fixes to the default reload for init.d scripts.
- Allow redirector status code to be configured.
- Fix import path for square/go-jose.
- Use more compatible group name for permissions file parser tests.
- nsupdate example script fixes.

v0.0.59: Miscellaneous changes.

Better hostname validation in "acmetool want".
Allow environment variables to be passed to challenge hooks.
Allow acmeapi to obtain new nonces if the nonce pool is depleted.
Don't attempt fdb permission tests on non-cgo builds.
Add read/write timeouts to redirector.
Allow hidden files within the state directory.

Builds are now made using Go 1.7.

v0.0.57: Fix TLS-SNI hook invocation.

Adds an `import-pem-account` command which can import an account key stored in
PEM format. This complements the existing `import-jwk-account` command which
can import an account key stored in JWK format.

Fixes a bug whereby OCSP must-staple requests in CSRs would not be generated
correctly.

Expose raw response in OCSP API.

Fixes to makefile for freebsd. GNU make must still be used.

Release engineering fixes.