Revert "test cases: do not pass global option on command line"

This reverts commit 9b1eb8b.
It is not needed anymore since the pre-1.8 semantics were the
good ones.

Only leave in place the new and clearer testcase names.

Author: bonzini

test cases/common/223 persubproject options/meson.build

@@ -1,5 +1,5 @@
 project('persubproject options', 'c', 'cpp',
-  default_options : ['werror=true', 'default_library=both',
+  default_options : ['werror=true',
                      'warning_level=3',
                      'cpp_std=c++11'])
 

test cases/common/223 persubproject options/test.json

@@ -0,0 +1,7 @@
+{
+    "matrix": {
+        "options": {
+            "default_library": [ { "val": "both" } ]
+        }
+    }
+}