Signed-off-by: Connor McAdams <cmcadams@codeweavers.com>

Seen with the Korean locale from time to time, probably caused by some
uninitialized input context data.

Word 2016 queries a lot of font glyph bounding boxes and bitmaps with translation matrices. The
result of these queries is not cached because the transform matrix is not the identity matrix.
However, the translation offsets don't affect FreeType font operations at all, which can be
verified in ft_matrix_from_dwrite_matrix() called by get_glyph_transform(). So these results with
translation matrices can be cached as well. With this patch, Word 2016 stuttering is reduced
significantly.

Needed for mingw Firefox build.

For the __has_attribute() fallback.

Fixes: f4c38014

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54666

Needed for mingw Firefox build.

Wrong sizeof check: pointer instead of referenced structure.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=53704

ctxt_handle is moved to the top of struct tlsw_session so that it can be
easily retrieved via LDAP_OPT_X_TLS_SSL_CTX.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54727

To be used by graphics drivers.