meson: Do not run fc-cache when installing into a DESTDIR

It cause permission denied errors because it is often not run as root.
This requires Meson >=0.57.0.

fc-cache/meson.build

@@ -9,5 +9,6 @@ tools_man_pages += ['fc-cache']
 
 # Do not try to execute target's fc-cache on host when cross compiling
 if get_option('cache-build').enabled() and not meson.is_cross_build()
-  meson.add_install_script(fccache, '-s', '-f', '-v')
+  meson.add_install_script(fccache, '-s', '-f', '-v',
+    skip_if_destdir: true)
 endif

meson.build

@@ -1,6 +1,6 @@
 project('fontconfig', 'c',
   version: '2.14.0',
-  meson_version : '>= 0.56.0',
+  meson_version : '>= 0.57.0',
   default_options: [ 'buildtype=debugoptimized'],
 )