[ttfautohint-build.sh] revert ttfautohint build dependencies: FreeType back to v2.8 (from v2.8.1), Harfbuzz back to v1.5.0 (from 1.7.4)

tools/scripts/install/ttfautohint-build.sh

@@ -37,13 +37,16 @@
 BUILD="$HOME/ttfautohint-build"
 
 # The library versions.
-FREETYPE_VERSION="2.8.1"
-HARFBUZZ_VERSION="1.7.4"
+FREETYPE_VERSION="2.8"
+HARFBUZZ_VERSION="1.5.0"
 TTFAUTOHINT_VERSION="1.7"
 
 # Necessary patches (lists of at most 10 URLs each separated by whitespace,
 # to be applied in order).
-FREETYPE_PATCHES=""
+FREETYPE_PATCHES="\
+  http://git.savannah.gnu.org/cgit/freetype/freetype2.git/patch/?id=c9a9cf59 \
+  http://git.savannah.gnu.org/cgit/freetype/freetype2.git/patch/?id=c8829e4b \
+"
 HARFBUZZ_PATCHES=""
 TTFAUTOHINT_PATCHES=""