Roll FreeType past 2.7.1.

https://skia.googlesource.com/third_party/freetype2.git/+log/ffd8f6223607e..08fd250e1af0aa16

This picks up a number of fixes and an implementation of
FT_Get_Var_Design_Coordinates.

Change-Id: Idac2b3b5d2b0684fa2c13f4f2484c09f39a4eced
Reviewed-on: https://skia-review.googlesource.com/6815
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
2 files changed