Add NSHighResolutionCapable flag to Info.plist for better font rendering on Retina displays

Leveldb as subtree

remove obsolete and unused typedef for Windows

osx: make use of the 10.8+ user notification center to display growl lik...

Move pMiningKey init out of StartRPCThreads

Don't attempt to resize vector to negative size.

Make FindBlockByHeight constant-time

Check for correct genesis

Use boost::asio::deadline_timer for walletpassphrase timeout

Refactor key.cpp/.h

Replace repeated GetBoolArg() calls with Checkpoint::fEnabled variable set once at init time

listreceivedbyaddress now provides tx ids (issue #1149)

This commit decouples the pMiningKey initialization and shutdown from the RPC
threads.

`getwork` and `getblocktemplate` rely on pMiningKey, and can also be ran
from the debug window in the UI even when the RPC server is not running.

Solves issue #2706.

It's after 2013-05-15 forever now, so remove the code for the May 15 fork

Make release-process.md more generic

Tweaked a little bit to provide examples.

Squashed commits into 1, while hoping not to break anything

Fix Memory Leak

Prepare for 0.9 merge window

Explictly cast calculation to int, to allow std::min to work.

Explicitly #include stdarg.h, for access to va_list

translations update 2013-05-23

Clean up mining CReserveKey to prevent crash at shutdown

set once at init time.

- if 10.8, use user notification center, if <10.8, use growl
Signed-off-by: Jonas Schnelli <jonas.schnelli@include7.ch>

Fixes issue#2687

- integrates current translations from Transifex

More bestblock records in wallets

Set CLIENT_VERSION_IS_RELEASE, bump build to 0.8.2.1