meson: Fix missing name arguments of cc.compiles() calls

Without it, the check won't show up in the meson setup/configure
output.

Discussion: https://www.postgresql.org/message-id/flat/795b1c54-c64a-47f9-8fa3-880dcab59975%40eisentraut.org

Author: petere

meson.build

@@ -1727,6 +1727,7 @@ if cc.compiles('''
       my_label:
       return 1;
     }''',
+    name: 'computed goto',
     args: test_c_args)
   cdata.set('HAVE_COMPUTED_GOTO', 1)
 endif
@@ -1743,6 +1744,7 @@ if cc.compiles('''
         ({ _Static_assert(1, "foo"); });
     }
     ''',
+    name: '_Static_assert',
     args: test_c_args)
   cdata.set('HAVE__STATIC_ASSERT', 1)
 endif
@@ -2359,6 +2361,7 @@ elif host_cpu == 'ppc' or host_cpu == 'ppc64'
       }
       int test_adds(int x) { return addi(3, x) + addi(x, 5); }
       ''',
+      name: '@0@: "i"(x) when __builtin_constant_p(x)'.format(host_cpu),
       args: test_c_args)
       cdata.set('HAVE_I_CONSTRAINT__BUILTIN_CONSTANT_P', 1)
     endif
@@ -2547,7 +2550,7 @@ int main(void)
     return y;
 }
 '''.format(kw),
-    name: 'typeof()',
+    name: kw,
     args: test_c_args, include_directories: postgres_inc)
 
     cdata.set('HAVE_TYPEOF', 1)