New feature: Support default locales other than empty string in mergelocales.py

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What steps will reproduce the problem?
1. Use a default locale other than empty (e.g. specifically set to 'en')
2. Try to use mergelocales.py
3. It fails as LocalizableResource.properties does not exist

It would be good to introduce an optional parameter to specify default locale. 
To get this working locally I haven't used a parameter as I'm not very familiar 
with Python but I have done:

1. Added "defaultLocale = 'en'" at the top
2. Changed line 463 to match against defaultLocale and not ''
3. Changed line 480 to match against defaultLocale and not ''

This seems to work but obvious is not very flexible (would be better as a 
parameter).

Original issue reported on code.google.com by cknow...@gmail.com on 22 Sep 2010 at 10:01

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Original comment by philippe.beaudoin on 22 Sep 2010 at 1:21

• Added labels: internationalization

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Original comment by philippe.beaudoin on 22 Sep 2010 at 1:21

• Changed state: Accepted

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Original comment by philippe.beaudoin on 22 Sep 2010 at 1:45

• Added labels: Component-Internationalization

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Original comment by philippe.beaudoin on 22 Sep 2010 at 1:59

• Added labels: Component-Localizer
• Removed labels: Component-Internationalization

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Original comment by philippe.beaudoin on 25 Jan 2011 at 6:36

• Added labels: Milestone-V1.0-6

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Bumping to 0.7, preparing release 0.6.

Original comment by philippe.beaudoin on 6 Jun 2011 at 8:17

• Added labels: Milestone-V1.0-7
• Removed labels: Milestone-V1.0-6

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Original comment by philippe.beaudoin on 1 Feb 2012 at 6:52

• Added labels: Milestone-V0.8