Fix some typos and convert windows-installer scripts to Python 3

The scripts are poorly converted as Windows is not really supoported
anymore and would need some love from a contributor who actually uses
Windows

src/diffuse/main.py

@@ -534,8 +534,7 @@ class Diffuse(Gtk.Window):
                 info.name, info.encoding, info.revision, info.label = name, encoding, None, label
                 info.last_stat = info.stat = os.stat(name)
                 self.setFileInfo(f, info)
-                # update the syntax highlighting incase we changed the file
-                # extension
+                # update the syntax highlighting in case we changed the file extension
                 syntax = theResources.guessSyntaxForFile(name, ss)
                 if syntax is not None:
                     self.setSyntax(syntax)

windows-installer/build.py

@@ -46,7 +46,7 @@ def copyFile(src, dest, use_text_mode=False,enc=None):
     s = f.read()
     f.close()
     if enc is not None:
-        s = codecs.encode(unicode(s, 'utf_8'), enc)
+        s = codecs.encode(str(s, encoding='utf_8'), enc)
     f = open(dest, w)
     f.write(s)
     f.close()
@@ -190,12 +190,12 @@ for lang in os.listdir(d):
         while True:
             i = s.find('&#', idx)
             if i < 0:
-                a.append(unicode(s[idx:], 'latin_1'))
+                a.append(str(s[idx:], encoding='latin_1'))
                 break
-            a.append(unicode(s[idx:i], 'latin_1'))
+            a.append(str(s[idx:i], encoding='latin_1'))
             i += 2
             j = s.find(';', i)
-            a.append(unichr(int(s[i:j])))
+            a.append(chr(int(s[i:j])))
             idx = j + 1
         s = ''.join(a)
         s = codecs.encode(s, 'utf-8')

windows-installer/setup.new.py

@@ -10,14 +10,14 @@ gnomeSiteDir = os.path.join(siteDir, "gnome")
 
 # This is the list of dll which are required by PyGI.
 # I get this list of DLL using http://technet.microsoft.com/en-us/sysinternals/bb896656.aspx
-#   Procedure: 
+#   Procedure:
 #    1) Run your from from your IDE
 #    2) Command for using listdlls.exe
 #        c:/path/to/listdlls.exe python.exe > output.txt
-#    3) This would return lists of all dll required by you program 
-#       in my case most of dll file were located in c:\python27\Lib\site-packages\gnome 
+#    3) This would return lists of all dll required by you program
+#       in my case most of dll file were located in c:\python27\Lib\site-packages\gnome
 #       (I am using PyGI (all in one) installer)
-#    4) Below is the list of gnome dll I received from listdlls.exe result. 
+#    4) Below is the list of gnome dll I received from listdlls.exe result.
 
 # If you prefer you can import all dlls from c:\python27\Lib\site-packages\gnome folder
 #missingDll = glob.glob(gnomeSiteDir + "\\" + '*.dll')
@@ -142,10 +142,10 @@ for dll in missingDll:
     includeFiles.append((os.path.join(gnomeSiteDir, dll), dll))
     #includeFiles.append(dll)
 
-# You can import all Gtk Runtime data from gtk folder              
+# You can import all Gtk Runtime data from gtk folder
 #gnomeLibs= ['etc','lib','share']
 
-# You can import only important Gtk Runtime data from gtk folder  
+# You can import only important Gtk Runtime data from gtk folder
 gnomeLibs = [
     'lib\\gdk-pixbuf-2.0',
     'lib\\girepository-1.0',
@@ -196,7 +196,7 @@ def copyFile(src, dest, use_text_mode=False,enc=None):
     s = f.read()
     f.close()
     if enc is not None:
-        s = codecs.encode(unicode(s, 'utf_8'), enc)
+        s = codecs.encode(str(s, encoding='utf_8'), enc)
     f = open(dest, w)
     f.write(s)
     f.close()