needed for sending BIP16 transactions on test network through GUI

Add req- prefixes to comply with BIP21.

Fix Minimize to the tray instead of the taskbar (rework)

Get ext. IP from UPnP, make sure addrMe IsRoutable() in version.

Fix wallet encryption with compressed pubkeys

Fix #822: use free instead of delete

Enable accessible widgets Qt module on win32

Fix #794. Only remove transactions from memory pool when they're actually in the memory pool.

Enable accessible widgets Qt module on win32, so that people with screen readers such as NVDA can make sense of it.

This fixes a potential bug where some NATs may replace the node's
interal IP with its external IP in version messages, causing
incorrect checksums when version messages begin being checksummed
on February 14, 2012.

- Remove features list (no longer makes sense)
- Document USE_QRCODE

Split dependencies into deps-gitian.yml

Look for flushwallet/listen/irc/dnsseed/upnp instead of noflushwallet/etc. And switch default for irc to 0.

-bip16 option (default: 1) to support / not support BIP 16. And bumped default BIP16 switchover date from Feb 15 to Mar 1

When a transaction has multiple outputs that go to the wallet, list these
as multiple transactions in the UI. This is also applied to generated
(coinbase) transactions. Also makes the code shorter and easier
to understand.

Mac deploy tool: make dylibs writeable when copying into app bundle, so they can be stripped/nametool'ed

* My patch for miniupnpc has made it into the latest MacPorts release: https://trac.macports.org/ticket/31354
* Documentation has been changed appropriately
* New pure-Python macdeployqt; leverages all problems with the stock macdeployqt

* fixes issue #742
* new translations: cs_CZ fa fi fr_FR hr pl ro_RO sv tr