Squashed 'src/leveldb/' changes from aca1ffc..ae6c262

ae6c262 Merge branch 'leveldb' into ripple-fork
28fa222 Looks like a bit more delay is needed to smooth the latency.
a18f3e6 Tidy up JobQueue, add ripple_core module
ab82e57 Release leveldb 1.12
02c6259 Release leveldb 1.11
5bbb544 Rate limit compactions with a 25ms pause after each complete file.
8c29c47 LevelDB issue 178 fix: cannot resize a level 0 compaction set
18b245c Added GNU/kFreeBSD kernel name (TARGET_OS)
8be9d12 CondVar::SignalAll was broken, leading to deadlocks on Windows builds. http://code.google.com/p/leveldb/issues/detail?id=149
c9fc070 Upgrade LevelDB to 1.10.0, mostly for better write stall logging.
8215b15 Tweak to variable name to support unity build

git-subtree-dir: src/leveldb
git-subtree-split: ae6c2620b2ef3d5c69e63dc0eda865d6a39fa061
Merge commit 'adae78ea9940f4d44382967d1296e7db0b54a4de' into leveldb-squashed
let user select wallet file with -wallet=foo.dat

use std::string instead of psz for WalletFile

only allow wallets within $DATADIR

Use strWalletFile in salvage/recover

fix: remove unused variable pszWalletFile

move strWalletFile to init.h/init.cpp

avoid conversion of strWalletfile to c-string
Bugfix: Store last/next wallet resend times unique per CWallet object
Bitcoin-Qt: fix QApplication includes to match our include defaults

- move all QApplication includes to top of included Qt headers
- undef our loop macro where it would cause compilation errors otherwise
Don't use checkpoints and accept nonstd txn on -regtest
Fix multi-block reorg transaction resurrection
exclude CreatePidFile() function on WIN32 as it is unused
cleanup compat.h Windows stuff

- remove an unneded include for mswsock.h as we use winsock2.h anyway
- move typedef u_int SOCKET; into the #ifndef WIN32 part
- remove typedef int socklen_t;  as this is defined in ws2tcpip.h
Merge pull request #1889 from tcatm/multi-wallet

let user select wallet file with -wallet=foo.dat
Merge pull request #2848 from Diapolo/translations

update bitcoin_en.ts to current master (2013-07-23)
Merge pull request #2847 from Diapolo/fix_QApplication_include

Bitcoin-Qt: fix QApplication includes to match our include defaults
fix possible infinite loop in intro.cpp thread

- it was possible to trigger an infinite loop in FreespaceChecker::check() by
  simply removing the drive letter on Windows (which leads to an infinite
  loop in the FreespaceChecker thread)
- this was caused by not checking if we make progress with
  parentDir.parent_path()
Fix typo in README.md
Merge pull request #2863 from maaku/patch-1

Fix typo in README.md
Merge pull request #2702 from vinniefalco/leveldb-subtree-at-1-10-0

Leveldb subtree at 1 12 0
Merge pull request #2541 from luke-jr/bugfix_wallet_resend

Bugfix: Store last/next wallet resend times unique per CWallet object
Make sure new wallet variables are initialized
Bitcoin-Qt: save and restore position of debug window

- move the code for saving and restoring window positions from BitcoinGUI
  to GUIUtil, make it more generic and also use it for saving/restoring
  debug window positions
fix string in intro.cpp, which is untranslatable on Transifex

- seems the code tags in the original string cause errors, when using the
  Transifex site for translation