Regression from commit 0761f816 (123792:
complete annotations on text ranges feature, 2013-12-19), the problem
was that while sw wanted CH_TXTATR_INWORD as a placeholder character for
anchor positions that do not count as a word boundary, the commit
changed GetCharOfTextAttr() so that annotations have CH_TXTATR_BREAKWORD
as the placeholder.

Fix the problem by reverting the last hunk of
sw/source/core/txtnode/thints.cxx changes in that commit.

Change-Id: Ia8c97efda9c1e90ae3c27ddb8247e3f3203a63fb