Make directories in build tree, too.

interpreter.py

@@ -922,6 +922,7 @@ class Interpreter():
                 raise InterpreterException('Subproject directory does not exist and can not be downloaded.')
             subdir = os.path.join('subprojects', resolved)
             abs_subdir = os.path.join(self.build.environment.get_source_dir(), 'subprojects', subdir)
+        os.makedirs(os.path.join(self.build.environment.get_build_dir(), subdir), exist_ok=True)
         self.global_args_frozen = True
         mlog.log('\nExecuting subproject ', mlog.bold(dirname), '.\n', sep='')
         subi = Interpreter(self.build, dirname, subdir)

wrap.py

@@ -79,7 +79,7 @@ class Resolver:
             (pdata, phash) = self.get_data(purl)
             expected = p.get('patch_hash')
             if phash != expected:
-                raise RuntimeError('Incorrect hash for patch %s:\n %s expected\n %s actual.' % (packagename, expected, phash))
+                raise RuntimeError('Incorrect hash for patch %s:\n %s expected\n %s actual' % (packagename, expected, phash))
             open(os.path.join(self.cachedir, p.get('patch_filename')), 'wb').write(pdata)
         else:
             mlog.log('Package does not require patch.')