depends: fix bitcoin-qt back-compat with older freetype versions at runtime

A few years ago, libfreetype introduced FT_Get_Font_Format() as an alias for
FT_Get_X11_Font_Format(), but FT_Get_X11_Font_Format() was kept for abi
backwards-compatibility.

Our qt bump to 5.9 introduced a call to FT_Get_Font_Format(). Replace it with
FT_Get_X11_Font_Format() in order to remain compatibile with older freetype,
which is still used by e.g. Ubuntu Trusty.

Author: theuni

depends/packages/qt.mk

@@ -120,6 +120,7 @@ define $(package)_extract_cmds
 endef
 
 define $(package)_preprocess_cmds
+  sed -i.old "s|FT_Get_Font_Format|FT_Get_X11_Font_Format|" qtbase/src/platformsupport/fontdatabases/freetype/qfontengine_ft.cpp && \
   sed -i.old "s|updateqm.commands = \$$$$\$$$$LRELEASE|updateqm.commands = $($(package)_extract_dir)/qttools/bin/lrelease|" qttranslations/translations/translations.pro && \
   sed -i.old "/updateqm.depends =/d" qttranslations/translations/translations.pro && \
   sed -i.old "s/src_plugins.depends = src_sql src_network/src_plugins.depends = src_network/" qtbase/src/src.pro && \