Restructure to TDS and add Travis

.travis.yml

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+language: generic
+os: linux
+
+install:
+- cd ci/
+- source texlive.sh
+- cd ..
+
+cache:
+  directories:
+  - /tmp/texlive
+  - $HOME/.texlive
+  - /tmp/tlpkg
+
+addons:
+  apt:
+    packages:
+    - ghostscript
+    - realpath
+
+before_script:
+- git fetch --unshallow --tags || true
+
+script: |
+  set -e
+  cd doc/latex/pgf-pie
+  while : ; do
+    $engine -shell-escape -halt-on-error -interaction=nonstopmode pgf-pie-manual.tex
+    grep -q -E "(There were undefined references|Rerun to get (cross-references|the bars) right)" *.log || break
+    [ "$(( thisrun=$(( thisrun + 1 )) ))" -lt 5 ] || { echo "Reruns exceeded"; exit 1; }
+  done
+  cd -
+
+jobs:
+  include:
+  - env: engine=lualatex
+
+  - env: engine=pdflatex
+
+  - env: engine=xelatex
+
+  - env: engine=latex
+    after_script: |
+      cd doc/latex/pgf-pie
+      dvips pgf-pie-manual.dvi
+      ps2pdf pgf-pie-manual.ps
+      cd -
+
+before_deploy: |
+  git ls-files | sed '/^\./d;/^ci/d' | tee FILES
+  echo doc/latex/pgf-pie/pgf-pie-manual.pdf >> FILES
+  zip -j pgf-pie.zip $(cat FILES)
+
+deploy:
+  provider: releases
+  token: $GH_TOKEN
+  file_glob: true
+  file:
+  - "*.zip"
+  - "doc/latex/pgf-pie/pgf-pie-manual.pdf"
+  skip_cleanup: true
+  overwrite: true
+  on:
+    tags: true
+    condition: $engine = lualatex

ci/texlive.profile

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+selected_scheme scheme-infraonly
+TEXDIR /tmp/texlive
+TEXMFCONFIG ~/.texlive/texmf-config
+TEXMFHOME ~/texmf
+TEXMFLOCAL /tmp/texlive/texmf-local
+TEXMFSYSCONFIG /tmp/texlive/texmf-config
+TEXMFSYSVAR /tmp/texlive/texmf-var
+TEXMFVAR ~/.texlive/texmf-var
+option_doc 0
+option_src 0

ci/texlive.sh

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+#!/usr/bin/env sh
+
+export PATH=/tmp/texlive/bin/x86_64-linux:$PATH
+
+# Check for cached version
+if ! command -v texlua > /dev/null; then
+  # Obtain TeX Live
+  curl -LO http://mirror.ctan.org/systems/texlive/tlnet/install-tl-unx.tar.gz
+  tar -xzf install-tl-unx.tar.gz
+  cd install-tl-20*
+
+  # Install a minimal system
+  ./install-tl --profile=../texlive.profile
+
+  cd ..
+fi
+
+# Update infra first
+tlmgr update --self
+
+# Install all the required packages
+tlmgr install \
+      atbegshi \
+      atveryend \
+      bigintcalc \
+      bitset \
+      carlisle \
+      dvips \
+      ec \
+      epstopdf-pkg \
+      etexcmds \
+      geometry \
+      gettitlestring \
+      graphics \
+      graphics-def \
+      hycolor \
+      hyperref \
+      iftex \
+      infwarerr \
+      intcalc \
+      keyval \
+      kvdefinekeys \
+      kvoptions \
+      kvsetkeys \
+      latex \
+      latex-bin \
+      letltxmacro \
+      listings \
+      ltxcmds \
+      luaotfload \
+      luatex \
+      luatexbase \
+      metafont \
+      mfware \
+      pdfescape \
+      pdftexcmds \
+      pgf \
+      refcount \
+      rerunfilecheck \
+      texlive-scripts \
+      uniquecounter \
+      url \
+      xcolor \
+      xetex
+
+# Keep no backups (not required, simply makes cache bigger)
+tlmgr option -- autobackup 0
+
+# Update the TL install but add nothing new
+tlmgr update --self --all --no-auto-install
+
+# Install PGF
+tlmgr init-usertree --usertree `realpath ..`
+export TEXMFHOME=`realpath ..`