Fix project tests category name used in skippable() and XML output

Since 25df6e7 split the iteration over tests to start them from the
iteration to collect their results, the variable 'name' is only being
set in the first iteratiorn, so all tests are treated as being in the
last test category read (probably 'wasm') for skipppable() and in the
XML output.

Store the category name in the TestDef object
Use it in skippable()
Use it in classname attribute of XML test results

run_project_tests.py

@@ -224,6 +224,7 @@ def get_paths(self, compiler: str, env: environment.Environment, installdir: Pat
 @functools.total_ordering
 class TestDef:
     def __init__(self, path: Path, name: T.Optional[str], args: T.List[str], skip: bool = False):
+        self.category = path.parts[1]
         self.path = path
         self.name = name
         self.args = args
@@ -1270,9 +1271,9 @@ def tqdm_print(*args: mlog.TV_Loggable, sep: str = ' ') -> None:
             continue
 
         # Handle skipped tests
-        if (result is None) or (('MESON_SKIP_TEST' in result.stdo) and (skippable(name, t.path.as_posix()))):
+        if (result is None) or (('MESON_SKIP_TEST' in result.stdo) and (skippable(t.category, t.path.as_posix()))):
             f.update_log(TestStatus.SKIP)
-            current_test = ET.SubElement(current_suite, 'testcase', {'name': testname, 'classname': name})
+            current_test = ET.SubElement(current_suite, 'testcase', {'name': testname, 'classname': t.category})
             ET.SubElement(current_test, 'skipped', {})
             skipped_tests += 1
             continue
@@ -1323,7 +1324,7 @@ def tqdm_print(*args: mlog.TV_Loggable, sep: str = ' ') -> None:
         current_test = ET.SubElement(
             current_suite,
             'testcase',
-            {'name': testname, 'classname': name, 'time': '%.3f' % total_time}
+            {'name': testname, 'classname': t.category, 'time': '%.3f' % total_time}
         )
         if result.msg != '':
             ET.SubElement(current_test, 'failure', {'message': result.msg})