* src/autofit/afadjust.h (AF_IGNORE_CAPITAL_TOP, AF_IGNORE_CAPITAL_BOTTOM,
AF_IGNORE_SMALL_TOP, AF_IGNORE_SMALL_BOTTOM): New macros.
* src/autofit/afadjust.c (af_reverse_character_map_new)
[FT_DEBUG_LEVEL_TRACE]: Updated.
Also fix debugging strings of other flags.
* src/autofit/afhints.h (AF_EDGE_NO_BLUE): New edge flag to make the
auto-hinter ignore the edge while assigning blue zones.
* src/autofit/aflatin.c (af_latin_hints_compute_blue_edges): Use it.
(af_prevent_top_blue_alignment, af_prevent_bottom_blue_alignment,
af_latin_get_base_glyph_blues, af_latin_ignore_top,
af_latin_ignore_bottom): New functions.
(af_latin_hints_apply): Updated.
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