Merge commit '84d6d69fc69662b2709fffbeaf3c3b4f53c535b1'
Squashed 'src/leveldb/' changes from ae6c262..a02ddf9

a02ddf9 Added GNU/kFreeBSD kernel name (TARGET_OS)
8487468 CondVar::SignalAll was broken, leading to deadlocks on Windows builds. http://code.google.com/p/leveldb/issues/detail?id=149
f6d84d1 Allow files to be opened for reading multiple times
cb8e3f7 Checking whether closing succeeds
d5317e8 Print actual Win32 error that occurred on file creation failure.
907f308 Port leveldb to MinGW32
9def2bf Mingw support for Windows LevelDB port
0a7b074 Pre-Vista leveldb::port::InitOnce implementation
31a2b09 Native Windows LevelDB port
058a035 Remove Snappy support
5bd76dc Release leveldb 1.12
7b094f1 Release leveldb 1.11
28dad91 Release leveldb 1.10
514c943 Make DB::Open fail if sst files are missing.
d84c825 Fix corruption bug found and analyzed by dhruba@gmail.com
ea2e919 added utility to dump leveldb files
REVERT: ae6c262 Merge branch 'leveldb' into ripple-fork
REVERT: 28fa222 Looks like a bit more delay is needed to smooth the latency.
REVERT: a18f3e6 Tidy up JobQueue, add ripple_core module
REVERT: ab82e57 Release leveldb 1.12
REVERT: 02c6259 Release leveldb 1.11
REVERT: 5bbb544 Rate limit compactions with a 25ms pause after each complete file.
REVERT: 8c29c47 LevelDB issue 178 fix: cannot resize a level 0 compaction set
REVERT: 18b245c Added GNU/kFreeBSD kernel name (TARGET_OS)
REVERT: 8be9d12 CondVar::SignalAll was broken, leading to deadlocks on Windows builds. http://code.google.com/p/leveldb/issues/detail?id=149
REVERT: c9fc070 Upgrade LevelDB to 1.10.0, mostly for better write stall logging.
REVERT: 8215b15 Tweak to variable name to support unity build
REVERT: aca1ffc Allow files to be opened for reading multiple times
REVERT: 693a70c Checking whether closing succeeds
REVERT: 0144d04 Print actual Win32 error that occurred on file creation failure.
REVERT: 43ed517 Fix corruption bug found and analyzed by dhruba@gmail.com
REVERT: 413c74c added utility to dump leveldb files
REVERT: 96eda85 Port leveldb to MinGW32
REVERT: 0967260 Mingw support for Windows LevelDB port
REVERT: ee3f9bd Pre-Vista leveldb::port::InitOnce implementation
REVERT: f5d0a41 Native Windows LevelDB port
REVERT: 28b35f1 Remove Snappy support

git-subtree-dir: src/leveldb
git-subtree-split: a02ddf9b14d145e88185ee209ab8b01d8826663a
Merge pull request #2907 from sipa/leveldb-noripple

Switch to cleaned-up LevelDB 1.12 branch.
makefile.mingw: Fix Win32 RPC Crashes.

https://github.com/bitcoin/bitcoin/commit/8864019f6d88b13d3442843d9e6ebeb8dd938831
Merge pull request #2911 from phelixbtc/patch-4

makefile.mingw: Fix Win32 RPC Crashes.
Checkpoint at block 250,000
Performance optimization for bloom filters.

This reduces a peer's ability to attack network resources by
 using a full bloom filter, but without reducing the usability
 of bloom filters.  It sets a default match everything filter
 for peers and it generalizes a prior optimization to
 cover more cases.
Merge pull request #2913 from gavinandresen/checkpoint_250k

Checkpoint at block 250,000
Add MurmurHash3() unit test

Useful as a source of test vectors to anyone re-implementing bloom
filters.
Squashed 'src/leveldb/' changes from a02ddf9..be1b0ff

be1b0ff On Mac OS X fsync does not guarantee write to disk. Use fcntl F_FULLFSYNC instead.

git-subtree-dir: src/leveldb
git-subtree-split: be1b0ff1fcd6ad820a7fd111ac671fb51cc68001
Merge leveldb subtree change.

* On Mac OS X fsync does not guarantee write to disk. Use fcntl F_FULLFSYNC instead.
Merge pull request #2916 from sipa/leveldb-osxfsync

Import OSX fsync change from LevelDB subtree
Merge pull request #2914 from gmaxwell/bloom_faster

Performance optimization for bloom filters.
Merge pull request #2915 from petertodd/murmurhash-tests

Add MurmurHash3() unit test
Update the bloom state on the real object, not the temporary one.

This resulted in just passing all transactions to filtered wallets
which worked surprisingly well, except where it didn't.
Merge pull request #2919 from gmaxwell/bloom_faster

Update the bloom state on the real object, not the temporary one.
Added new RPC method for explicitly banning nodes or removing a ban.
Added listbannednodes.