- Skipped the fix for BZ 569229 because I don't know where to apply that; the
processInternalEntity method no longer exists. Hopefully the bug doesn't re-
appear.
- Previous fixes for 3rd and 13th patches have been merged to their respective
patches as well.
- 15th patch is now a fix for the 13th and 14th since somewhere between 2.6.4
and 2.7.3 has made use of a debugging method we don't want to use as well as
a new boolean method called parserBusy which got mistakenly excluded as an
unused API while rewriting the 14th patch.