port bitcoin: switch from git fetching to tarball release, allows to …

…cache local distfile; openmaintainer

git-svn-id: https://svn.macports.org/repository/macports/trunk/dports@118163 d073be05-634f-4543-b044-5fe20cf6d1d6

finance/bitcoin/Portfile

@@ -16,9 +16,11 @@ long_description    Bitcoin is a peer-to-peer digital currency. By peer-to-peer,
                     operating through the nodes of the network. 
 homepage            http://www.bitcoin.org/
 
-fetch.type          git
-git.url             https://github.com/bitcoin/bitcoin.git
-git.branch          v${version} 
+master_sites        https://github.com/[string repeat "$name/" 2]archive/
+distname            v${version}
+worksrcdir          ${name}-${version}
+checksums           rmd160  aec2cc5f5d035728864577d5575d460e52c0fbf6 \
+                    sha256  229e5e13ff45f6d4302d618859aee9d36791f93bc7357d02bf2fabc683fdf2f4 
 
 depends_lib         port:boost \
                     port:openssl \