making PO/POT/... update scripts py3.2 compatible + making it almost win compatible

Adding from codecs import open + the encoding in update_pot.py so it works for python 3.2.
Now it should be easier to replace the executable folders in the first lines of the file.
It now also works if you are in the same folder as the .po files (i.e. os.path.dirname(__FILE__) is empty)

It's still not working for me on Mingw because I need gettext 1.8 and so far I found only the 1.7
(in 1.7 msgmerge --lang is not supported)

po/update_mo.py

@@ -27,7 +27,8 @@ import subprocess
 import os
 import sys
 
-CURRENT_DIR = os.path.dirname(__file__)
+GETTEXT_MSGFMT_EXECUTABLE = "msgfmt"
+CURRENT_DIR = os.path.abspath(os.path.dirname(__file__))
 SOURCE_DIR = os.path.normpath(os.path.abspath(os.path.join(CURRENT_DIR, "..")))
 LOCALE_DIR = os.path.join(SOURCE_DIR, "release", "bin", ".blender", "locale")
 
@@ -38,7 +39,7 @@ def process_po(po):
     lang = os.path.basename(po)[:-3]
 
     # show stats
-    cmd = ("msgfmt",
+    cmd = (GETTEXT_MSGFMT_EXECUTABLE,
         "--statistics",
         os.path.join(CURRENT_DIR, "%s.po" % lang),
         "-o",

po/update_msg.py

@@ -26,7 +26,7 @@
 
 import os
 
-CURRENT_DIR = os.path.dirname(__file__)
+CURRENT_DIR = os.path.abspath(os.path.dirname(__file__))
 SOURCE_DIR = os.path.normpath(os.path.abspath(os.path.join(CURRENT_DIR, "..")))
 
 FILE_NAME_MESSAGES = os.path.join(CURRENT_DIR, "messages.txt")

po/update_po.py

@@ -27,7 +27,8 @@ import subprocess
 import os
 import sys
 
-CURRENT_DIR = os.path.dirname(__file__)
+GETTEXT_MSGMERGE_EXECUTABLE = "msgmerge"
+CURRENT_DIR = os.path.abspath(os.path.dirname(__file__))
 DOMAIN = "blender"
 
 
@@ -35,7 +36,7 @@ def process_po(po):
     lang = os.path.basename(po)[:-3]
 
     # update po file
-    cmd = ("msgmerge",
+    cmd = (GETTEXT_MSGMERGE_EXECUTABLE,
            "--update",
            "--lang=%s" % lang,
            os.path.join(CURRENT_DIR, "%s.po" % lang),

po/update_pot.py

@@ -25,9 +25,10 @@
 
 import subprocess
 import os
+from codecs import open
 
 GETTEXT_XGETTEXT_EXECUTABLE = "xgettext"
-CURRENT_DIR = os.path.dirname(__file__)
+CURRENT_DIR = os.path.abspath(os.path.dirname(__file__))
 SOURCE_DIR = os.path.normpath(os.path.abspath(os.path.join(CURRENT_DIR, "..")))
 DOMAIN = "blender"
 
@@ -55,7 +56,7 @@ def main():
     pot_messages = {}
     reading_message = False
     message = ""
-    with open(FILE_NAME_POT, 'r') as handle:
+    with open(FILE_NAME_POT, 'r', "utf-8") as handle:
         while True:
             line = handle.readline()
 
@@ -73,8 +74,8 @@ def main():
                 message += line[1:-1]
 
     # add messages collected automatically from RNA
-    with open(FILE_NAME_POT, "a") as pot_handle:
-        with open(FILE_NAME_MESSAGES, 'r') as handle:
+    with open(FILE_NAME_POT, "a", "utf-8") as pot_handle:
+        with open(FILE_NAME_MESSAGES, 'r', "utf-8") as handle:
             while True:
                 line = handle.readline()