pisi 2.3_beta2

This is the second beta for the upcoming 2.3.x releases. This release
mostly includes bug fixes and translation updates.

Changes since 2.3_beta1
-----------------------
fatih (15):
      tree-wide: Remove redundant imports
      cli/upgrade: Fix help string
      cli/install: Fix help string
      dtd/rng: Replace update type 'bug' with 'critical'
      cli/history: Pass -K option to less
      fetcher: Handle all fetch errors
      cli/install: Fix the exception raised when an unknown component name is provided
      util: Add a singleton metaclass
      Make Config and Constants classes singletons
      config: Add a method for setting options
      cli/build: Use Error class in pisi namespace
      installdb: Fix errors when installed package info is broken
      repodb: Let check_distribution raise an error
      cli/addrepo: Remove dead code
      l10n: Update messages

sdalgic (1):
      cli/blame: Blame installed package instead of the one in the repositories.

transifex (22):
      l10n: Updated Spanish (Castilian) (es) translation to 97% (Klemens Häckel)
      l10n: Updated Spanish (Castilian) (es) translation to 99% (Klemens Häckel)
      l10n: Updated Italian (it) translation to 76% (Davide Siciliano)
      l10n: Updated French (fr) translation to 96% (Philippe Svetoslavsky)
      l10n: Updated French (fr) translation to 96% (Philippe Svetoslavsky)
      l10n: Updated French (fr) translation to 96% (Philippe Svetoslavsky)
      l10n: Updated French (fr) translation to 96% (Philippe Svetoslavsky)
      l10n: Updated French (fr) translation to 96% (Philippe Svetoslavsky)
      l10n: Updated French (fr) translation to 96% (Philippe Svetoslavsky)
      l10n: Updated French (fr) translation to 97% (Philippe Svetoslavsky)
      l10n: Updated French (fr) translation to 97% (Philippe Svetoslavsky)
      l10n: Updated French (fr) translation to 98% (Philippe Svetoslavsky)
      l10n: Updated French (fr) translation to 98% (Philippe Svetoslavsky)
      l10n: Updated French (fr) translation to 99% (Philippe Svetoslavsky)
      l10n: Updated French (fr) translation to 99% (Philippe Svetoslavsky)
      l10n: Updated French (fr) translation to 99% (Philippe Svetoslavsky)
      l10n: Updated French (fr) translation to 99% (Philippe Svetoslavsky)
      l10n: Updated French (fr) translation to 100% (Philippe Svetoslavsky)
      l10n: Updated Swedish (sv) translation to 19% (Patrik Karlsson)
      l10n: Updated Swedish (sv) translation to 23% (Patrik Karlsson)
      l10n: Updated Swedish (sv) translation to 40% (Patrik Karlsson)
      l10n: Updated Turkish (tr) translation to 100% (Fatih Aşıcı)

pisi/__init__.py

@@ -18,7 +18,7 @@ import atexit
 import logging
 import logging.handlers
 
-__version__ = "2.3_beta1"
+__version__ = "2.3_beta2"
 
 __all__ = [ 'api', 'configfile', 'db']