Dont store the Liberation Fonts in source control

They were kept there originally because newer versions of them were
reported to cause BSODs in Windows Vista/7. Since we no longer support
those, and newer windows has moved font parsing out fo kernel, this
should no longer be an issue.

setup/commands.py

@@ -21,7 +21,7 @@ __all__ = [
     'upload_user_manual', 'upload_demo', 'reupload',
     'stage1', 'stage2', 'stage3', 'stage4', 'stage5', 'publish', 'publish_betas',
     'linux', 'linux32', 'linux64', 'win', 'win32', 'win64', 'osx', 'build_dep',
-    'export_packages', 'hyphenation', 'csslint'
+    'export_packages', 'hyphenation', 'liberation_fonts', 'csslint'
 ]
 
 from setup.installers import Linux, Win, OSX, Linux32, Linux64, Win32, Win64, ExtDev, BuildDep, ExportPackages
@@ -51,6 +51,9 @@ mathjax = MathJax()
 from setup.hyphenation import Hyphenation
 hyphenation = Hyphenation()
 
+from setup.liberation import LiberationFonts
+liberation_fonts = LiberationFonts()
+
 from setup.git_version import GitVersion
 git_version = GitVersion()
 

setup/liberation.py

@@ -0,0 +1,34 @@
+#!/usr/bin/env python
+# vim:fileencoding=UTF-8:ts=4:sw=4:sta:et:sts=4:fdm=marker:ai
+# License: GPLv3 Copyright: 2019, Kovid Goyal <kovid at kovidgoyal.net>
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+import glob
+import os
+
+from setup.revendor import ReVendor
+
+
+class LiberationFonts(ReVendor):
+
+    description = 'Download the Liberation fonts'
+    NAME = 'liberation_fonts'
+    TAR_NAME = 'liberation-fonts'
+    VERSION = '2.1.1'
+    DOWNLOAD_URL = 'https://github.com/liberationfonts/liberation-fonts/files/4743886/liberation-fonts-ttf-%s.tar.gz' % VERSION
+
+    @property
+    def vendored_dir(self):
+        return self.j(self.RESOURCES, 'fonts', 'liberation')
+
+    def run(self, opts):
+        self.clean()
+        os.makedirs(self.vendored_dir)
+        with self.temp_dir() as dl_src:
+            src = opts.path_to_hyphenation or self.download_vendor_release(dl_src, opts.hyphenation_url)
+            font_files = glob.glob(os.path.join(src, '*/Liberation*.ttf'))
+            if not font_files:
+                raise SystemExit(f'No font files found in {src}')
+
+            for x in font_files:
+                self.add_file(x, os.path.basename(x))

setup/resources.py

@@ -199,7 +199,7 @@ class RapydScript(Command):  # {{{
 class Resources(Command):  # {{{
 
     description = 'Compile various needed calibre resources'
-    sub_commands = ['kakasi', 'mathjax', 'rapydscript', 'hyphenation']
+    sub_commands = ['kakasi', 'liberation_fonts', 'mathjax', 'rapydscript', 'hyphenation']
 
     def run(self, opts):
         from calibre.utils.serialize import msgpack_dumps