Immigrate rdflib-sparql (plus some prefiguring changes)
Immigrated, refactored rdfextras code.
Add some storage conveniences
Shepherding.
dependencies for 2.6/2.5
minor cleanup - some docstrings
reset flags after test for sparql tests
integrated xml/html literal code into normal literal class
merged master
removed code to support 2.4
Revert to mainstream, temporarily suspend doctests.
pep8
Integrate mainstream pull of rdflib-sparql
doc update, fixes #260.
replaced IOMemory store with new implementation based on Python sets
fix for Python 2.5 compatibility: avoid set.intersection() with multiple parameters, which was introduced in Python 2.6
bsbm tests moved to rdflib-benchmarks;
Merge branch 'setstore' of https://github.com/osma/rdflib into reunification
example cleanup - copy examples from rdflib-sparql
log message tweak