corrected what may be important errors in HDP implementation; (1) the low field of newly created nodes was not being set, which led to a conditional depending on uninitialized memory according to valgrind; (2) in one case, the wrong argument was passed to min().  surprisingly, in tests so far, performance does not seem to have changed much after the problems were fixed. need to look into that aspect more.
corrected what may be important errors in HDP implementation; (1) the low field of newly created nodes was not being set, which led to a conditional depending on uninitialized memory according to valgrind; (2) in one case, the wrong argument was passed to min().  surprisingly, in tests so far, performance does not seem to have changed much after the problems were fixed. need to look into that aspect more.


git-svn-id: c57083cae03de9a0803956a3abd65044d17a906b@976 3bbcab3b-a713-480a-a40a-1fdaa183d0c8

abhishekcs/RLFD-Project,trey0/zmdp,abhishekcs/RLFD-Project,abhishekcs/RLFD-Project,abhishekcs/RLFD-Project,trey0/zmdp,trey0/zmdp,trey0/zmdp,abhishekcs/RLFD-Project,trey0/zmdp