d: Correctly set SONAME on D shared libraries

All D compilers use the system linker, which is very convenient here.

mesonbuild/compilers.py

@@ -1635,7 +1635,8 @@ class DCompiler(Compiler):
         return ['-shared']
 
     def get_soname_args(self, prefix, shlib_name, suffix, path, soversion, is_shared_module):
-        return []
+        # FIXME: Make this work for Windows, MacOS and cross-compiling
+        return get_gcc_soname_args(GCC_STANDARD, prefix, shlib_name, suffix, path, soversion, is_shared_module)
 
     def get_unittest_args(self):
         return ['-unittest']