windows bots failing

[behdad]

I added a test to indic-syllable and curiously just the mingw bots are failing:
https://ci.appveyor.com/project/behdad/harfbuzz/build/1.0.549

Quite likely appveyor issue. Just filing here and moving on.

We should make the test suite just print the test log in the bots.

[ebraminio]

Interesting error it has, mix of Windows and Unix style paths on path env, possibly an internal issue of msys2 or autotools on it, I am in favor of commenting these lines out for now. We are also changing PATH on our CI script but it is not the issue I guess as PATH already has mix of UNIX/non-UNIX style paths.

[khaledhosny]

The libtool issue does not seem to be the actual one, but rather this test failure: https://ci.appveyor.com/project/behdad/harfbuzz/build/1.0.549/job/noyk4iaqnqtukbo0#L800. We should print the test-suite.log to stdout when make check fails. Trying this now.

[khaledhosny]

Looks like a rounding error or something (or bug in FreeType):

hb-shape fonts/sha1sum/87f85d17d26f1fe9ad28d7365101958edaefb967.ttf  --unicodes U+0980,U+0981
Actual:   [anjibeng=0+519|candrabindubeng=0+0]
Expected: [anjibeng=0+520|candrabindubeng=0+0]