Fontconfig: upgrade to release 2.15.0

Change-Id: Id50d82b4dc7c3e8000b7658a9f62efa0d6b39495
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/163646
Tested-by: Jenkins
Reviewed-by: Taichi Haradaguchi <20001722@ymail.ne.jp>

download.lst

@@ -121,8 +121,8 @@ FIREBIRD_TARBALL := Firebird-3.0.7.33374-0.tar.bz2
 # three static lines
 # so that git cherry-pick
 # will not run into conflicts
-FONTCONFIG_SHA256SUM := dba695b57bce15023d2ceedef82062c2b925e51f5d4cc4aef736cf13f60a468b
-FONTCONFIG_TARBALL := fontconfig-2.14.2.tar.xz
+FONTCONFIG_SHA256SUM := 63a0658d0e06e0fa886106452b58ef04f21f58202ea02a94c39de0d3335d7c0e
+FONTCONFIG_TARBALL := fontconfig-2.15.0.tar.xz
 # three static lines
 # so that git cherry-pick
 # will not run into conflicts

external/fontconfig/ExternalPackage_fontconfig_data.mk

@@ -35,6 +35,7 @@ $(eval $(call gb_ExternalPackage_add_unpacked_files,fontconfig_data,$(LIBO_SHARE
     conf.d/11-lcdfilter-default.conf \
     conf.d/11-lcdfilter-legacy.conf \
     conf.d/11-lcdfilter-light.conf \
+    conf.d/11-lcdfilter-none.conf \
     conf.d/20-unhint-small-vera.conf \
     conf.d/25-unhint-nonlatin.conf \
     conf.d/30-metric-aliases.conf \

external/fontconfig/README

@@ -1,6 +1,6 @@
 This "bundled" fontconfig is usually built only in an Android build or a fuzzing build
 
 Fontconfig is a font configuration and customization library. It is designed to locate fonts
-within the system and select them according to requirements specified by applications. 
+within the system and select them according to requirements specified by applications.
 
 From [ https://www.freedesktop.org/wiki/Software/fontconfig/ ]