Added first portion of logging adaptation.

Things may be broken at this point - there are still several modules to
be adapted.

ebook_converter/ebooks/pdb/haodoo/reader.py

@@ -116,9 +116,9 @@ class Reader(FormatReader):
     def extract_content(self, output_dir):
         txt = ''
 
-        self.log.info(u'Decompressing text...')
+        self.log.info('Decompressing text...')
         for i in range(1, self.header_record.num_records + 1):
-            self.log.debug(u'\tDecompressing text section %i' % i)
+            self.log.debug('\tDecompressing text section %s', i)
             title = self.header_record.chapter_titles[i-1]
             lines = []
             title_added = False
@@ -135,7 +135,7 @@ class Reader(FormatReader):
                 lines.insert(0, '<h1 class="chapter">' + title + '</h1>\n')
             txt += '\n'.join(lines)
 
-        self.log.info(u'Converting text to OEB...')
+        self.log.info('Converting text to OEB...')
         html = HTML_TEMPLATE % (self.header_record.title, txt)
         with open(os.path.join(output_dir, 'index.html'), 'wb') as index:
             index.write(html.encode('utf-8'))