Add scantailor package (#12833)

* Add scantailor

* qt: Fix build w/ GCC9 for @4:

* qt: Fix patch filename and qt version

* Fix typo in patch name

* scantailor: Fix version

* scantailor: Use a more-modern fork

* scantailor: Remove unused patch file

Co-authored-by: Ruben Di Battista <ruben.di-battista@polytechnique.edu>

var/spack/repos/builtin/packages/scantailor/package.py

@@ -0,0 +1,31 @@
+# Copyright 2013-2019 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+
+
+class Scantailor(CMakePackage):
+    """Scan Tailor is an interactive post-processing tool for scanned pages. It
+    performs operations such as page splitting, deskewing, adding/removing
+    borders, and others. You give it raw scans, and you get pages ready to be
+    printed or assembled into a PDF or DJVU file. Scanning, optical character
+    recognition, and assembling multi-page documents are out of scope of this
+    project."""
+
+    homepage = "http://www.scantailor.org"
+    url = "https://github.com/trufanov-nok/scantailor/archive/0.2.7.tar.gz"
+
+    version(
+        "0.2.7",
+        sha256="3e27647621d43638888a268902f8fa098b06a70a5da5d0623b1c11220a367910",
+    )
+
+    depends_on("qt@5:")
+    depends_on("libjpeg")
+    depends_on("zlib")
+    depends_on("libpng")
+    depends_on("libtiff")
+    depends_on("boost@1.35:")
+    depends_on("libxrender")