Modified instructions inside of log_nooverlap.c
to optimally implement everything using the modified reblack API

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Implement {{{db_env_set_func_fsync}}} and write a test that can discern the use of group commit.  Fixes #499, #496.

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Build a performance test for groupcommit.    I don't know how to automate checking to see if it passed though.  Addresses #496.

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The logs are sometimes slightly larger than the log max, so this bug isn't quite fixed.  Addresses #79.

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toku_rt_super_create now checks the ptree from its caller is not NULL

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Initial version of range tree wrapper for redblacklib

This includes some notes, but nothing is really implemented.
The customized redblacklib does not yet exist for this.

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(We had both inline static and static inline

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Abstract the range tree to support multiple internal representations.
The shared portions are in rangetree-internal.h

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All function names that started with __toku_ now start with
toku__
We no longer have function symbols that start with '__'

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Get DUPSORT dbs with logging to work without assertion failures.  Recovery stlll is broken, however.  Addresses #482.  Fixes #442.

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created two versions of the lock tree, distinguished by -DTOKU_RT_NOOVERLAPS
modified rth iterator to provide hash key

git-svn-id: file:///svn/tokudb@2588 c7de825b-a66e-492c-adef-691d508d4ae1

Break out test4 from brt-test.   brt-test runs in 13 seconds, brt-test4 in 9 seconds, brt-test-cursor in 4 seconds, so we have halved the critical path.  Fixes #475.

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Minor makefile modifications.

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and easier compilation of non-linear range/lock trees.
Removed obsolete export maps.

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range tree and locktree unit testing uses static linking now

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Proper locking for c_put

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