freetype: upgrade to 2.5.3

Also drop the redundant definition of S.

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
freetype: disable harfbuzz

Freetype has an automatically detected dependency on Harfbuzz, which has a
dependency on Freetype.

To produce deterministic builds and avoid link failures when rebuilding freetype
with harfbuzz present add a PACKAGECONFIG for Harfbuzz and disable it by
default.

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>