fully make bs4 and soupsieve standalone in the project

lib/bs4/tests/test_lxml.py

@@ -12,16 +12,16 @@ except ImportError as e:
     LXML_VERSION = (0,)
 
 if LXML_PRESENT:
-    from bs4.builder import LXMLTreeBuilder, LXMLTreeBuilderForXML
+    from ...bs4.builder import LXMLTreeBuilder, LXMLTreeBuilderForXML
 
-from bs4 import (
+from ...bs4 import (
     BeautifulSoup,
     BeautifulStoneSoup,
     )
-from bs4.element import Comment, Doctype, SoupStrainer
-from bs4.testing import skipIf
-from bs4.tests import test_htmlparser
-from bs4.testing import (
+from ...bs4.element import Comment, Doctype, SoupStrainer
+from ...bs4.testing import skipIf
+from ...bs4.tests import test_htmlparser
+from ...bs4.testing import (
     HTMLTreeBuilderSmokeTest,
     XMLTreeBuilderSmokeTest,
     SoupTest,