So no longer instantiate XLinguServiceManager (which might e.g. bootstrap
Python) unless explicitly requested, which e.g. removes a noticable delay when
switching to the Options dialog's "Security" page (which causes size
calculations of FixedText controls that use TEXT_DRAW_WORDBREAK but not
TEXT_DRAW_WORDBREAK_HYPHENATION).

Change-Id: Ib0a28d3d7d7718faf6df7a138f5a86b8b2fd7713