Added meson.override_dependency if running as a subproject.

meson.build

@@ -41,6 +41,10 @@ scufcont_dep = declare_dependency(
   version: meson.project_version()
 )
 
+if meson.is_subproject()
+  meson.override_dependency('scufcont', scufcont_dep)
+endif
+
 if get_option('SCUFCONT_BUILD_TESTS') == true
   subdir('tests')
 endif