Release: Bitcoin Core 0.11.2

[harding]

Previews:

• Release notes: http://dg1.dtrt.org/en/release/v0.11.2
• Download: http://dg1.dtrt.org/en/download

This adds the Bitcoin Core 0.11.2 release to Bitcoin.org, making it the recommended release shown on the Download page. The release notes are current as of bitcoin/bitcoin@7e27892

Essential TODO:

• Make sure the download links work. This is automatically checked as part of the Travis CI build, so trigger a rebuild and, if it passes, this should be safe to merge.

Optional TODO (may be done in commits after merge):

• Add the actual release date to the YAML header in _releases/0.11.2.md
• Add the magnet URI to the YAML header in _releases/0.11.2.md (brief instructions for creating the link are provided as comments in that file)

The file names we're expecting for the binaries are:

/bin/bitcoin-core-0.11.2/bitcoin-0.11.2-win64-setup.exe
/bin/bitcoin-core-0.11.2/bitcoin-0.11.2-win32-setup.exe
/bin/bitcoin-core-0.11.2/bitcoin-0.11.2-win64.zip
/bin/bitcoin-core-0.11.2/bitcoin-0.11.2-win32.zip
/bin/bitcoin-core-0.11.2/bitcoin-0.11.2-osx.dmg
/bin/bitcoin-core-0.11.2/bitcoin-0.11.2-osx64.tar.gz
/bin/bitcoin-core-0.11.2/bitcoin-0.11.2-linux64.tar.gz
/bin/bitcoin-core-0.11.2/bitcoin-0.11.2-linux32.tar.gz
/bin/bitcoin-core-0.11.2/bitcoin-0.11.2.tar.gz
/bin/bitcoin-core-0.11.2/SHA256SUMS.asc
/bin/bitcoin-core-0.11.2/bitcoin-0.11.2.torrent

(Since these paths don't currently exist, the Travis CI build will fail. That's ok.)

@laanwj Note, if you merge this yourself, the merge commit needs to be PGP signed with your key 2346C9A6

[laanwj]

Everything should be ok - but need to hold up merging this until we have three signatures for gitian mac osx and windows signed:

https://github.com/bitcoin/gitian.sigs/tree/master/0.11.2-osx-signed
https://github.com/bitcoin/gitian.sigs/tree/master/0.11.2-win-signed

Edit: done (thanks @Michagogo)

[harding]

I'll merge this as soon as Travis CI finishes. Thanks!