Convert calibre modules to ebook_converter.

Here is the first batch of modules, which are needed for converting
several formats to LRF. Some of the logic has been change, more cleanups
will follow.

ebook_converter/tinycss/__init__.py

@@ -15,7 +15,7 @@ __version__ = VERSION
 from tinycss.css21 import CSS21Parser
 from tinycss.page3 import CSSPage3Parser
 from tinycss.fonts3 import CSSFonts3Parser
-from tinycss.media3 import CSSMedia3Parser
+from ebook_converter.tinycss.media3 import CSSMedia3Parser
 
 
 PARSER_MODULES = {

ebook_converter/tinycss/fonts3.py

@@ -7,9 +7,9 @@ __copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
 
 
 import re
-from polyglot.builtins import map
+from ebook_converter.polyglot.builtins import map
 from tinycss.css21 import CSS21Parser, ParseError
-from .tokenizer import tokenize_grouped
+from tinycss.tokenizer import tokenize_grouped
 
 
 def parse_font_family_tokens(tokens):

ebook_converter/tinycss/media3.py

@@ -7,7 +7,7 @@ __copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
 
 from tinycss.css21 import CSS21Parser
 from tinycss.parsing import remove_whitespace, split_on_comma, ParseError
-from polyglot.builtins import error_message
+from ebook_converter.polyglot.builtins import error_message
 
 
 class MediaQuery(object):