[PATCH] auto translation

Round 3b of this one.

Just the process of creating pre-translated error templates from .po

  - installs/uninstalls base templates for failover backup if no
translation is done.

No other changes from round 2:

  * Adds dependency on translation toolkit po2html for 'make dist' target.
  * Adds 'make translate' target
  * Adjusts 'make all' to do translation.
  * Adds --without-po2html configure option to optionally skip the
translation step unless explicitly asked for ('make translate').
  * Installs translated files properly, and skips silently if missing.
  * Un-installs translated files, and skips silently if missing.

Amos

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