Use small font for explanations in preferences.

Use small variant of text on OS X and gray text on Windows for
explanatory notes in preferences.  This was already done on the TM page,
do it elsewhere as well.
OS X: Fix reporting of missing spellchecking dict.
Fix codesig compatibility of GettextTools.bundle.

Xcode has issues with signing plugins/bundles that don't actually have a
binary in them.  To work around this limitation, create a tiny dummy
plugin binary with a dummy function in it.
Fix creation of plural text ctrls for new files.

Recreate the controls after the user picks the new file's language.
Use en plurals for new files with unknown language.

If the user refuses to pick the language, fall back to using English
plurals (i.e. two forms).
Merge branch 'stable' of github.com:vslavik/poedit into stable
Fix parsing of comments on obsolete entries.

If an obsolete (~-prefixed) entry was preceded by a comment, Poedit's
parser would treat all the following #~ msgid entries as part of the
comment, instead of recognizing them as separate entries.  Because this
super-large comment block would by necessity be the last one in the file
and so wouldn't be associated with an entry, it would be lost when the
file was saved.

Fixes #96.
Fix wrong wx version in configure's error message.

The check was correct, checking for 3.0.0, but the AC_MSG_ERROR text
still talked about 2.8.
Fix EM_SETLANGOPTIONS use.

Shouldn't reset already set flags (such as the defaults).  Call
EM_GETLANGOPTIONS to get the existing flags and then add
IMF_SPELLCHECKING to them.
Fix incorrect USE_SPELLCHECKING check.
Make Windows 8 spellchecking configurable.

Behave consistently with the other two platforms in that it is now
possible to disable spellchecking in preferences.  Not doing so was an
omission: USE_SPELLCHECKING wasn't set for Windows builds.

Reorganize the code a bit in the process and move spellchecking-related
helper functions to new spellchecking.{h,cpp} files.
Merge branch 'stable'

Conflicts:
	src/edframe.cpp
	src/resources/prefs.xrc
Correct name+email note after moving it under the fields.

Remove the "set below" part from the explanation, because it is not set
above, not below, the explanation text.
Always build with spellchecker enabled.

Remove the USE_SPELLCHECKING symbol.  Always require GtkSpell (and thus
GTK+) when building on Unix.