compilers: Move things out of clike

One method belongs in the base Compiler class, the other belongs in
the GnuLikeCompiler class.

mesonbuild/compilers/compilers.py

@@ -1201,6 +1201,9 @@ class Compiler:
         """
         return []
 
+    def get_coverage_link_args(self) -> T.List[str]:
+        return self.linker.get_coverage_args()
+
 
 def get_largefile_args(compiler):
     '''

mesonbuild/compilers/mixins/clike.py

@@ -114,12 +114,6 @@ class CLikeCompiler:
     def get_output_args(self, target):
         return ['-o', target]
 
-    def get_coverage_args(self):
-        return ['--coverage']
-
-    def get_coverage_link_args(self) -> T.List[str]:
-        return self.linker.get_coverage_args()
-
     def get_werror_args(self):
         return ['-Werror']
 

mesonbuild/compilers/mixins/gnu.py

@@ -312,6 +312,9 @@ class GnuLikeCompiler(metaclass=abc.ABCMeta):
                 'not {}.'.format(linker))
         return ['-fuse-ld={}'.format(linker)]
 
+    def get_coverage_args(self) -> T.List[str]:
+        return ['--coverage']
+
 
 class GnuCompiler(GnuLikeCompiler):
     """