Move packages into overlays as God intended

overlays/packages/xash3d/change-zip-date.patch

@@ -0,0 +1,17 @@
+diff --git a/scripts/waifulib/zip.py b/scripts/waifulib/zip.py
+index 6e903ba7..d47f1754 100644
+--- a/scripts/waifulib/zip.py
++++ b/scripts/waifulib/zip.py
+@@ -25,7 +25,11 @@ class ziparchive(Task.Task):
+ 				arcfile = src.path_from(self.relative_to)
+ 
+ 				Logs.debug('%s: %s <- %s as %s', self.__class__.__name__, outfile, infile, arcfile)
+-				zf.write(infile, arcfile)
++
++				arcfile = zipfile.ZipInfo(filename=arcfile, date_time=(1980, 1, 1, 0, 0, 0))
++
++				with open(infile, 'rb') as f:
++					zf.writestr(arcfile, f.read())
+ 
+ @TaskGen.feature('zip')
+ def create_zip_archive(self):