Enable paranoid corruption checks in LevelDB >= 1.16
Implement SI-style (thin space) thoudands separator
rework help messages for fee-related options

- mention the units and show the default for -paytxfee
Add DNS seed of open-nodes.org
change "char pch[200000]" to "new char[200000]"
[Qt] don't allow translation of our example btc address
Issue warning if collecting RandSeed data failed
Relax IsStandard rules for pay-to-script-hash transactions

Relax the AreInputsStandard() tests for P2SH transactions --
allow any Script in a P2SH transaction to be relayed/mined,
as long as it has 15 or fewer signature operations.

Rationale: https://gist.github.com/gavinandresen/88be40c141bc67acb247

I don't have an easy way to test this, but the code changes are
straightforward and I've updated the AreInputsStandard unit tests.
[Qt] New status bar Unit Display Control and related changes.

- New status bar control shows the current Unit of Display.
  When clicked (left,or right button) it shows a context menu
  that allows the user to switch the current Unit of Display (BTC, mBTC, uBTC)
- Recent Requests and Transaction Table headers are now updated when
  unit of display is changed, because their "Amount" column now displays the
  current unit of display.
- Takes care of issue #3970 Units in transaction export csv file.
- Small refactors for reusability.
- Demo Video https://www.youtube.com/watch?v=wwcr0Yh68go&list=UUG3jF2hgofmLWP0tRPisQAQ
- changes after Diapolo's feedback. Have not been able to build after last pool, issues with boost on MacOSX, will test on Ubuntu these changes.
- removed return statement on switch
- renamed onDisplayUnitsChanged(int) to updateDisplayUnit(int)
- now getAmountColumnTitle(int unit) takes a simple unit parameter. moved to BitcoinUnits.
Remove timing-based signature cache unit test

Two changes:

First removes a unit test that fails in my development environment
(OSX, compiled -g3 with clang).

sipa says that's not terribly surprising; the CMutableTransaction change
makes signing a little more expensive but verification quicker. The unit
test timed sign+verify-uncached versus verify-cached-five-times.

He also says the test will be invalid when libsec256kp1 is integrated
(because validation is super-optimized over signing).

core.h change fixes a compiler warning (clang -Wall : CMutableTransaction defined
as struct, declared as class in script.h).
ensure clean and consistent "namespace" usage

- remove some missplaced ;
- ensure end of a namespace is clearly visible
- use same formatting when using namespace
small cleanup of #ifdefs in BindListenPort()

- SO_NOSIGPIPE isn't available on WIN32 so merge the 2 non-WIN32 blocks
- use predefined names from header for IPV6_PROTECTION_LEVEL and
  PROTECTION_LEVEL_UNRESTRICTED
add missing BOOST_FOREACH indentation in ThreadSocketHandler()
add OpenSSL RAND_cleanup() on OpenSSL shutdown

- to securely erase the memory used by the PNRG
- also rework 2 comments in OpenSSL init
update coding.md to reflect changes by pull

- also mention alphabetical include ordering
JSON-RPC method: prioritisetransaction <txid> <priority delta> <priority tx fee>

Accepts the transaction into mined blocks at a higher (or lower) priority
Allocate more space if necessary in RandSeedAddPerfMon

Currently we use a fixed buffer of 250000 bytes to request
HKEY_PERFORMANCE_DATA. In many cases this is not enough, causing the
entropy collection to be skipped.

Use a loop that grows the buffer as specified in the RegQueryValueEx
documentation:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms724911%28v=vs.85%29.aspx

(as the size of the performance data can differ for every call, the
normal solution of requesting the size then allocating that can't work)
Merge pull request #4414

a90689f Remove timing-based signature cache unit test (Gavin Andresen)
Merge pull request #1583

2a72d45 JSON-RPC method: prioritisetransaction <txid> <priority delta> <priority tx fee> (Luke Dashjr)
Add an option to allow users to disable relaying/mining data carrier transactions