#670664: Fix HTMLParser to correctly handle the content of ``<script>...</script>`` and ``<style>...</style>``.

PYTHONNOUSERSITE).  (Patch by Carl Meyer)

PYTHONNOUSERSITE).  (Patch by Carl Meyer)

even when reporthook is None. Patch by Jyrki Pulliainen.

even when reporthook is None. Patch by Jyrki Pulliainen.

Refer to os.RTLD_xxx constants instead of ctypes and DLFCN modules.

(Patch by Roger Serwy)

(Patch by Roger Serwy)

Issue 13274:  Make the pure python code for heapq more closely match the C implementation for an undefined corner case.