wkhtmltopdf: version up to 0.12.4

As `setuptools.archive_util.unpack_archive` (or self.extract
from slapos.recipe.build) is not able to handle .tar.xz archives,
tar component is added to wkhtmltopdf build dependencies.

component/wkhtmltopdf/buildout.cfg

@@ -2,21 +2,23 @@
 
 extends = 
   ../fontconfig/buildout.cfg
+  ../tar/buildout.cfg
   ../xorg/buildout.cfg
 
 parts =
+  tar
   wkhtmltopdf
 
 [wkhtmltopdf]
 recipe = slapos.recipe.build
 
 # here, two %s are used, first one is for directory name (eg. x86_64), and second one is for filename (eg. x86-64).
-url_x86-64 = http://wkhtmltopdf.googlecode.com/files/wkhtmltopdf-0.11.0_rc1-static-amd64.tar.bz2
-url_x86 = http://wkhtmltopdf.googlecode.com/files/wkhtmltopdf-0.11.0_rc1-static-i386.tar.bz2
+url_x86-64 = http://download.gna.org/wkhtmltopdf/0.12/0.12.4/wkhtmltox-0.12.4_linux-generic-amd64.tar.xz
+url_x86 = http://download.gna.org/wkhtmltopdf/0.12/0.12.4/wkhtmltox-0.12.4_linux-generic-i386.tar.xz
 
 # supported architectures md5sums
-md5sum_x86 = d796cfb66e45673d8f6728b61f34d5e0
-md5sum_x86-64 = 02a2c6963728b69b8e329dcbf1f4c7e1
+md5sum_x86 = ce1a2c0b2cf786ccc5d5828c42c99ddd
+md5sum_x86-64 = 96b7306cebb9e65355f69f7ab63df68b
 
 # script to install.
 script =
@@ -28,14 +30,19 @@ script =
   platform = guessPlatform()
   url = self.options['url_' + platform]
   md5sum = self.options['md5sum_' + platform]
-  extract_dir = self.extract(self.download(url, md5sum))
-  shutil.move(extract_dir, location)
+  path = self.download(url, md5sum)
+  import tempfile
+  extract_dir = tempfile.mkdtemp(self.name)
+  self.cleanup_dir_list.append(extract_dir)
+  self.logger.debug('Created working directory ' + repr(extract_dir))
+  call(["${tar:location}/bin/tar", "xJf", path, "-C", extract_dir])
+  shutil.move(os.path.join(extract_dir, "wkhtmltox"), location)
   wrapper_location = os.path.join("%(location)s", "wkhtmltopdf")
   wrapper = open(wrapper_location, 'w')
   wrapper.write("""#!${dash:location}/bin/dash
-  export LD_LIBRARY_PATH=%(location)s:${libXrender:location}/lib/:${fontconfig:location}/lib/:${libX11:location}/lib/:${libXext:location}/lib/
+  export LD_LIBRARY_PATH=%(location)s/lib/:${libXrender:location}/lib/:${fontconfig:location}/lib/:${libX11:location}/lib/:${libXext:location}/lib/
   export PATH=${fontconfig:location}/bin:$PATH
-  exec %(location)s/wkhtmltopdf-""" + WK_SUFIX_MAP[platform]+ """ "$@"
+  exec %(location)s/bin/wkhtmltopdf "$@"
   """)
   wrapper.close()
   os.chmod(wrapper_location, 0755)