Change Debian packaging to non-native.

- Add additional Makefile targets for generating an upstream tarball
  and to run debuild.
- Replace copyright symlink with a full copy of LICENSE

Makefile

@@ -28,6 +28,7 @@
 # Source Configuration
 go_package = blichmann.eu/code/jailtime
 go_programs = jailtime
+source_only_tgz = ../jailtime_0.3.orig.tar.xz
 
 # Directories
 this_dir := $(patsubst %/,%,$(dir $(abspath $(lastword $(MAKEFILE_LIST)))))
@@ -58,3 +59,29 @@ $(binaries): $(sources)
 	@mkdir -p "$(dir $(pkg_src))"
 	@ln -sf "$(this_dir)" "$(pkg_src)"
 	@go install $(go_package)
+
+$(source_only_tgz): clean
+	@echo "  [Archive]   $@"
+	@tar -C "$(this_dir)" -caf "$@" \
+		--transform=s,^,jailtime-0.3/, \
+		--exclude=.git/* --exclude=.git \
+		--exclude=debian/* --exclude=debian \
+		"--exclude=$@" \
+		--exclude-vcs-ignores \
+		.??* *
+
+# Create a source tarball without the debian/ subdirectory
+.PHONY: debsource
+debsource: $(source_only_tgz)
+
+# debuild signs the package iff DEBFULLNAME, DEBEMAIL and DEB_SIGN_KEYID are
+# set. Note that if the GPG key includes an alias, it must match the latest
+# entry in debian/changelog.
+deb: debsource $(binaries)
+	@echo "  [Debuild]   Building package"
+	@debuild
+
+.PHONY: debclean
+debclean: clean
+	@echo "  [Deb-Clean] Removing artifacts"
+	@debuild -- clean

debian/README.md

@@ -0,0 +1,7 @@
+## Debian packaging
+
+This directory contains the Debian package source for jailtime. To make this a
+regular, non-native package, this sub-directory should not be included in the
+original source. Use `make dist` from the parent directory to build a source
+tarball compliant with Debian policy. The contents of this directory may then
+serve as a starting point for official packaging.

debian/changelog

@@ -1,3 +1,9 @@
+jailtime (0.3-1) unstable; urgency=medium
+
+  * Non-native packaging
+
+ -- Christian Blichmann (Secure Email 2017/2018) <mail@blichmann.eu>  Tue, 09 May 2017 14:30:57 +0200
+
 jailtime (0.3) unstable; urgency=medium
 
   * Update to newer Golang version

debian/compat

@@ -1 +1 @@
-7
+9

debian/copyright

@@ -0,0 +1,24 @@
+jailtime version 0.3
+Copyright (c)2015-2017 Christian Blichmann
+
+Create and manage chroot/jail environments
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.

debian/source/format

@@ -0,0 +1 @@
+3.0 (quilt)

debian/source/local-options

@@ -0,0 +1,2 @@
+unapply-patches
+abort-on-upstream-changes