[autofit] Minor fix.

* src/autofit/afcjk.c (af_cjk_metrics_init_widths),
src/autofit/aflatin.c (af_latin_metrics_init_widths): Fix handling
of alternative standard characters.
This also fixes a compilation warning in non-debug mode.
Fix compilation with MinGW.

Right now, compilation out of the box with latest MinGW is broken
due to bugs in header files of mingwrt 4.0.3 in strict ANSI mode,
cf.

  https://sourceforge.net/p/mingw/bugs/2024/
  https://sourceforge.net/p/mingw/bugs/2046/

* builds/unix/configure.raw: Don't set `-ansi' flag for MinGW.
Work-around for Perl bug #63402.
Fix problems with perl 5.8.8 as distributed with current MinGW.

* src/tools/afblue.pl: Work-around for Perl bug #63402.
(string_re): Avoid `possessive quantifiers', which have been
introduced in Perl version 5.10.
Minor.
[cff] Fix minor performance bug.

* src/cff/cf2font.c (cf2_font_setup): Darkening amount and blue zone
calculations are now cached and not recomputed on each glyph.
Fix Savannah bug #41507.

* src/sfnt/ttsbit.c (tt_sbit_decoder_load_bitmap)
[!FT_CONFIG_OPTION_USE_PNG] <17, 17, 19>: Fix error handling.
Fix Windows build directories.

The build target is now `windows' instead of `win32'.

Problem reported by Nickolas George <darknova.clan@gmail.com>.

* builds/modules.mk: Don't use `win32' and `win16' (!) but
`windows'.

* builds/windows/detect.mk, builds/windows/win32-def.mk:
s/win32/windows/.
Fix clang static analyzer and compiler warnings.

* src/autofit/afhints.c (af_glyph_hints_align_weak_points),
src/autofit/afloader (af_loader_load_g) <FT_GLYPH_FORMAT_COMPOSITE>,
src/base/ftcalc.c (FT_MSB), src/base/ftoutln.c
(FT_Outline_Decompose), src/bdf/bdfdrivr.c (bdf_interpret_style),
src/cff/cffparse.c (cff_parse_integer), src/cid/cidparse.c
(cid_parser_new), src/pfr/pfrload.c (pfr_phy_font_load),
src/raster/ftraster.c (Decompose_Curve), src/sfnt/sfdriver.c
(sfnt_get_ps_name), src/sfnt/ttcmap.c (tt_cmap12_next,
tt_cmap13_next), src/smooth/ftgrays.c (gray_hline): Remove dead
code.

* src/autofit/afmodule.c (af_property_get_face_globals,
af_property_set, af_property_get), src/base/ftbitmap.c
(ft_gray_for_premultiplied_srgb_bgra): Make functions static.

* src/base/ftobjs.c (ft_remove_renderer): Protect against
library == NULL.
(ft_property_do): Make function static.

* src/base/ftrfork.c: Include `ftbase.h'.

* src/sfnt/ttsbit.c (tt_face_load_sbix_image)
[!FT_CONFIG_OPTION_USE_PNG], src/type1/t1gload.c
(T1_Compute_Max_Advance): Avoid compiler warning.

* src/truetype/ttinterp.c (TT_New_Context): Reduce scope of
variable.
Fix Savannah bug #41465.

* builds/unix/unix-def.in (CLEAN): Add `freetype-config'.
(DISTCLEAN): Remove `freetype-config'.
[cff] Optimize by using `FT_MulDiv'.
Suggested by Alexei.

* src/cff/cf2font.c (cf2_computeDarkening): Do it.
[autofit] Fix `make multi' compilation.

* src/hbshim.c: Include `afglobal.h' and `aftypes.h'.
fix commit comment.
Merge branch 'master' of git://git.sv.nongnu.org/freetype/freetype2