maintainer-feedback requested: [Bug 227936] print/freetype2: Update to 2.9.1

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Bug 227936: print/freetype2: Update to 2.9.1
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227936



--- Description ---
Patch to update print/freetype2 port from 2.9 to 2.9.1 version.

Look following links for changes:
https://sourceforge.net/projects/freetype/files/freetype2/2.9.1
https://git.savannah.gnu.org/cgit/freetype/freetype2.git/tree/docs/CHANGES?h=VE
R-2-9-1
ABI:
https://abi-laboratory.pro/tracker/timeline/freetype/

- Add CONFIG option for freetype-config installation [1]
- Rename "Sub-pixel" word to "Subpixel" [2]
- Add OPTIONS_SUB and adapt pkg-plist
- Remove files/correct-flex-features.patch
- Regenerate files/extra-patch-fix_size_metrics.diff

Reference links:
1. Make installation of `freetype-config' optional (#53093):
http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=a7833f26c4ac
45cafe1dffdcd7f7dcfd6493161c
http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=b0a93839b528
18abbfe9b4c8755b4aa0f5232063
2. s/sub-pixel/subpixel/:
http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=63aaf89cecd7
52853b07a043e2a9db6a7686d558

The build was tested on FreeBSD 10.4 amd64.