- converted from Python2 code to Python3 code

- in camlib.py, CNCJob class -> generate_from_excellon_by_tool() was
failing in the line to sort the tools due of been unable to compare
between dict's. I replaced that section.

doc/source/conf.py

@@ -45,8 +45,8 @@ source_suffix = '.rst'
 master_doc = 'index'
 
 # General information about the project.
-project = u'Cirkuix'
-copyright = u'2014, Juan Pablo Caram'
+project = 'Cirkuix'
+copyright = '2014, Juan Pablo Caram'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
@@ -203,8 +203,8 @@ latex_elements = {
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).
 latex_documents = [
-  ('index', 'Cirkuix.tex', u'Cirkuix Documentation',
-   u'Juan Pablo Caram', 'manual'),
+  ('index', 'Cirkuix.tex', 'Cirkuix Documentation',
+   'Juan Pablo Caram', 'manual'),
 ]
 
 # The name of an image file (relative to this directory) to place at the top of
@@ -233,8 +233,8 @@ latex_documents = [
 # One entry per manual page. List of tuples
 # (source start file, name, description, authors, manual section).
 man_pages = [
-    ('index', 'cirkuix', u'Cirkuix Documentation',
-     [u'Juan Pablo Caram'], 1)
+    ('index', 'cirkuix', 'Cirkuix Documentation',
+     ['Juan Pablo Caram'], 1)
 ]
 
 # If true, show URL addresses after external links.
@@ -247,8 +247,8 @@ man_pages = [
 # (source start file, target name, title, author,
 #  dir menu entry, description, category)
 texinfo_documents = [
-  ('index', 'Cirkuix', u'Cirkuix Documentation',
-   u'Juan Pablo Caram', 'Cirkuix', 'One line description of project.',
+  ('index', 'Cirkuix', 'Cirkuix Documentation',
+   'Juan Pablo Caram', 'Cirkuix', 'One line description of project.',
    'Miscellaneous'),
 ]