Optimize mrTriplets for source-attr-only mapF using bytecode inspection
Test no vertex attribute replication
Create all versions of vid2pid ahead of time
Factor out VTableReplicatedValues
Add test for mapReduceTriplets in GraphSuite
Fix typo
Handle ClassNotFoundException from ByteCodeUtils

ByteCodeUtils.invokedMethod(), which we use in mapReduceTriplets, throws
a ClassNotFoundException when called with a closure defined in the
console. This commit catches the exception and conservatively assumes
the closure references all edge attributes.
Merge pull request #55 from ankurdave/aggregateNeighbors-variants

Specialize mapReduceTriplets for accessing subsets of vertex attributes