Fix Catalog::SetValidity() signature.

The method took bool argument while the uses already passed an enum to
it. Fix this by standardizing on the enum.
Don't allow entering incomplete parser configuration.

Prevent entry of parser settings that don't contain e.g.  the files
argument.  This is not complete validation of the definition's
correctness, but it's already better than nothing.
Update LetsMove dependency.
OS X: Add REKit dependency.

This is very useful for "hot-patching" wxWidgets' internal Objective-C
classes to tweak them to do something slightly different, without having
to modify the wx library itself.

Use the work-in-progress REKit branch, which doesn't conflict with wx's
handling of the first responder.
OS X: Complete languages case-insensitively.

NSComboBoxCell uses case-sensitive search for completion and there's no
way to customize this.  Use REKit to inject case-insensitive
completedString: implementation.
Update wxWidgets.

Fixes annoying OS X log messages about fonts and a few other issues here
and there, as usual.
Set eol-style of *.sh to LF.

Bash will fail with scripts in CRLF format; therefore always use LF for
such scripts.
Remove accidentally left x64 config from Poedit.sln.
Fix NewFromPOT() behavior if the user doesn't pick language.

Still do the other initialization for the file, only omit the
language-dependent part of it.
Fix assert when formatting a string do to passing long to %u.
Survive failure to create an ICU collator object.

Instead of crashing, fall back to using the standard library (i.e. usually C locale).
Update Bulgarian translation.
Fix inconsistencies and duplicate accelerators.
Remove outdated wx-2.8 translatable strings.

wx2.8 is no longer in use, wx3.0 is required, so remove these
i18n-unfriendly strings from 2.8 so that the translators don't have to
deal with them.
Merge pull request #80 from lanurmi/finnish-inconsistencies-etc-fix

Finish translation: fix inconsistencies and duplicate accelerators.
Add/fix the Language: header in PO files.
Add all Retina sizes to OS X app and doc icons.
Update wxWidgets to fix warnings.
Update Lucene++ to fix warnings.
Update Sparkle to fix warnings.