[gcompris] i18n, added comments to help translation in music

[Bruno Coudoin <bcoudoin src gnome org>]

commit 06efc819cb790bdbfc98abdb09ec6e76b85f924a
Author: Bruno Coudoin <bruno coudoin free fr>
Date:   Tue Oct 16 03:01:45 2012 +0200

    i18n, added comments to help translation in music
    
    The terminology of musical notation presents a particular L10n challenge as
    musical notation is essential a language of it's own that has co-evolved with
    it's host language.
    
    Literal translations of quarter note, eight note, etc. by localizers not
    familiar with the language of musical notation will almost certainly be
    incorrect,
    
    refs bug: https://bugzilla.gnome.org/show_bug.cgi?id=686187

 .../piano_composition.py                           |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/piano_composition-activity/piano_composition.py b/src/piano_composition-activity/piano_composition.py
index 630d54e..a897400 100644
--- a/src/piano_composition-activity/piano_composition.py
+++ b/src/piano_composition-activity/piano_composition.py
@@ -235,6 +235,7 @@ class Gcompris_piano_composition:
                 y=y,
                 height=45,
                 width=20,
+                # TRANSLATORS: http://en.wikipedia.org/wiki/Eighth_note
                 tooltip = "\n\n" + _("Eighth Note")
                 )
 
@@ -257,6 +258,7 @@ class Gcompris_piano_composition:
                 y=y,
                 height=45,
                 width=20,
+                # TRANSLATORS: http://en.wikipedia.org/wiki/Quarter_note
                 tooltip = "\n\n" + _("Quarter Note")
                 )
             self.quarterNoteSelectedButton.connect("button_press_event", self.updateToQuarter)
@@ -269,6 +271,7 @@ class Gcompris_piano_composition:
                 y=y,
                 height=45,
                 width=20,
+                # TRANSLATORS: http://en.wikipedia.org/wiki/Half_note
                 tooltip = "\n\n" + _("Half Note")
                 )
             self.halfNoteSelected.connect("button_press_event", self.updateToHalf)
@@ -281,6 +284,7 @@ class Gcompris_piano_composition:
                 y=y,
                 height=45,
                 width=20,
+                # TRANSLATORS: http://en.wikipedia.org/wiki/Whole_note
                 tooltip = "\n\n" + _("Whole Note")
                 )
             self.wholeNoteSelected.connect("button_press_event", self.updateToWhole)