I have no way to authoritatively know, but looks like test font only has one
face.  So, adjust test expectation instead.

Fixes https://github.com/harfbuzz/harfbuzz/pull/1085

I decided to always use the cache, instead of my previous sketch direction
that was to only allocate and use cache if fast advances are not available.
The cache is a mere 1kb, so just use it...

TODO: Invalidate cache on font size change.

Fixes https://github.com/harfbuzz/harfbuzz/issues/651
Fixes https://github.com/harfbuzz/harfbuzz/pull/1082

Related to https://github.com/harfbuzz/harfbuzz/pull/1082

This reverts commit 473b17af.

Updates to recent changes.

Use rand=255 to mean "randomize".

Part of https://github.com/harfbuzz/harfbuzz/pull/803

Except if the set it to 1, which would mean "randomize"... Ugly.

Randomization only happens by default. If the user specifies a value for
'rand', that value is respected.

Fixes https://github.com/harfbuzz/harfbuzz/issues/1141

New API:
HB_FEATURE_GLOBAL_START
HB_FEATURE_GLOBAL_END

Repurposed FDMap as Remap then subclassed for remapping SIDs
misc code cleanup

Fix a bug in CBDT sanitize, and redundant check in avar.

Fix avar sanitize().

Fixes https://github.com/harfbuzz/harfbuzz/issues/1154

Fixes https://github.com/harfbuzz/harfbuzz/issues/556

Devanagari regresses 12 tests, and Gujarati 2.  See:

  https://github.com/harfbuzz/harfbuzz/issues/556#issuecomment-419957472

New numbers:

BENGALI: 353725 out of 354188 tests passed. 463 failed (0.130722%)
DEVANAGARI: 707299 out of 707394 tests passed. 95 failed (0.0134296%)
GUJARATI: 366353 out of 366457 tests passed. 104 failed (0.0283799%)
GURMUKHI: 60729 out of 60747 tests passed. 18 failed (0.0296311%)
KANNADA: 951300 out of 951913 tests passed. 613 failed (0.0643966%)
MALAYALAM: 1048136 out of 1048334 tests passed. 198 failed (0.0188871%)
ORIYA: 42327 out of 42329 tests passed. 2 failed (0.00472489%)
SINHALA: 271596 out of 271847 tests passed. 251 failed (0.0923313%)
TAMIL: 1091754 out of 1091754 tests passed. 0 failed (0%)
TELUGU: 970555 out of 970573 tests passed. 18 failed (0.00185457%)

Fixes https://github.com/harfbuzz/harfbuzz/issues/1110

This reverts commit 616fd34a.

So I can get a release out.  I haven't debugged those yet, and they
are producing bad tables.