Initial packaging for Debian

This adds some source files, a script and skeleton for building
a Debian package that installs the zcash daemon and CLI tool.
Also removes unused Bitcoin files.

contrib/DEBIAN/changelog

@@ -0,0 +1,5 @@
+zcash (1.0.0-rc1) UNRELEASED; urgency=medium
+
+  * Initial packaging for Debian.
+
+ -- Zcash Company <team@z.cash>  Tue, 27 Sep 2016 12:05:17 -0700

contrib/DEBIAN/compat

@@ -0,0 +1 @@
+9

contrib/DEBIAN/control

@@ -0,0 +1,20 @@
+Source: zcash
+Section: utils
+Priority: optional
+Maintainer: Zcash Company <team@z.cash>
+Homepage: https://z.cash
+Build-Depends: autoconf, automake, bsdmainutils, build-essential
+ git, g++-multilib, libc6-dev, libtool
+ m4, ncurses-dev, pkg-config, python
+ unzip, wget, zlib1g-dev
+Vcs-Git: git@github.com:zcash/zcash.git
+Vcs-Browser: https://github.com/zcash/zcash
+Package: zcash
+Version: 1.0.0-rc1
+Architecture: amd64
+Description: Zcash is an implementation of the "Zerocash" protocol.
+ Based on Bitcoin's code, it intends to offer a far higher standard
+ of privacy and anonymity through a sophisticiated zero-knowledge
+ proving scheme which preserves confidentiality of transaction metadata.
+ This package provides the daemon, zcashd, and the CLI tool,
+ zcash-cli, to interact with the daemon.

contrib/DEBIAN/postinst

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+#!/bin/sh
+# postinst script for zcash
+#
+# see: dh_installdeb(1)
+set -e
+set -x
+# summary of how this script can be called:
+#        * <postinst> `configure' <most-recently-configured-version>
+#        * <old-postinst> `abort-upgrade' <new version>
+#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
+#          <new-version>
+#        * <postinst> `abort-remove'
+#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
+#          <failed-install-package> <version> `removing'
+#          <conflicting-package> <version>
+# for details, see http://www.debian.org/doc/debian-policy/ or
+# the debian-policy package
+
+case "$1" in
+    configure)
+    ;;
+
+    abort-upgrade|abort-remove|abort-deconfigure)
+    ;;
+
+    *)
+        echo "postinst called with unknown argument \`$1'" >&2
+        exit 1
+    ;;
+esac
+
+# dh_installdeb will replace this with shell code automatically
+# generated by other debhelper scripts.
+
+#DEBHELPER#
+
+exit 0

contrib/DEBIAN/postrm

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+#!/bin/sh
+# postrm script for zcash
+#
+# see: dh_installdeb(1)
+
+set -e
+#set -x
+# summary of how this script can be called:
+#        * <postrm> `remove'
+#        * <postrm> `purge'
+#        * <old-postrm> `upgrade' <new-version>
+#        * <new-postrm> `failed-upgrade' <old-version>
+#        * <new-postrm> `abort-install'
+#        * <new-postrm> `abort-install' <old-version>
+#        * <new-postrm> `abort-upgrade' <old-version>
+#        * <disappearer's-postrm> `disappear' <overwriter>
+#          <overwriter-version>
+# for details, see http://www.debian.org/doc/debian-policy/ or
+# the debian-policy package
+. /usr/share/debconf/confmodule
+
+case "$1" in
+    upgrade|failed-upgrade)
+    ;;
+
+    remove|abort-install|abort-upgrade|disappear)
+    ;;
+
+    purge)
+    ;;
+
+    *)
+        echo "postrm called with unknown argument \`$1'" >&2
+        exit 1
+    ;;
+esac
+
+# dh_installdeb will replace this with shell code automatically
+# generated by other debhelper scripts.
+
+#DEBHELPER#
+
+exit 0

contrib/DEBIAN/preinst

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+#!/bin/sh
+# preinst script for zcash
+#
+# see: dh_installdeb(1)
+
+set -e
+#set -x
+# summary of how this script can be called:
+#        * <new-preinst> `install'
+#        * <new-preinst> `install' <old-version>
+#        * <new-preinst> `upgrade' <old-version>
+#        * <old-preinst> `abort-upgrade' <new-version>
+# for details, see http://www.debian.org/doc/debian-policy/ or
+# the debian-policy package
+
+case "$1" in
+    install)
+   ;;
+
+    upgrade)
+    ;;
+
+    abort-upgrade)
+    ;;
+
+    *)
+        echo "preinst called with unknown argument \`$1'" >&2
+        exit 1
+    ;;
+esac
+
+# dh_installdeb will replace this with shell code automatically
+# generated by other debhelper scripts.
+
+#DEBHELPER#
+
+exit 0

contrib/DEBIAN/prerm

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+#!/bin/sh
+# prerm script for zcash
+#
+# see: dh_installdeb(1)
+
+set -e
+
+# summary of how this script can be called:
+#        * <prerm> `remove'
+#        * <old-prerm> `upgrade' <new-version>
+#        * <new-prerm> `failed-upgrade' <old-version>
+#        * <conflictor's-prerm> `remove' `in-favour' <package> <new-version>
+#        * <deconfigured's-prerm> `deconfigure' `in-favour'
+#          <package-being-installed> <version> `removing'
+#          <conflicting-package> <version>
+# for details, see http://www.debian.org/doc/debian-policy/ or
+# the debian-policy package
+
+
+case "$1" in
+    remove|deconfigure)
+    ;;
+
+    upgrade)
+    ;;
+
+    failed-upgrade)
+    ;;
+
+    *)
+        echo "prerm called with unknown argument \`$1'" >&2
+        exit 1
+    ;;
+esac
+
+# dh_installdeb will replace this with shell code automatically
+# generated by other debhelper scripts.
+
+#DEBHELPER#
+
+exit 0

contrib/DEBIAN/zcash.install

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+usr/bin/zcashd
+usr/bin/zcash-cli
+usr/local/bin/zcash-fetch-params