fix for #952 (send coins tab glitch)

Hide UI immediately after leaving the main loop

Prevents it from seeming to hang during shutdown if shutdown is triggered while the window is open.

Fix addrman crashes

Minor error message fix

A function returned the element to remove from a bucket, instead of its
position in that bucket. This function was only called when a tried
bucket overflowed, which only happens after many outgoing connections
have been made.

Closes: #1065, #1156

changed cursor for selectable text on the about dialog to IBeamCursor...

change text on message.ui from "Copy to Clipboard" to "Copy Signature"...

add an Alt-Shortcut to "Clear &All"

renamed qrcodedialog.ui window title to "QR-Code Dialog"... 

renamed qrcodedialog.ui window title to "QR-Code Dialog" and changed window size to the minimum values Qt Creator allows me to set

simplified qrcode icon that scales gracefully to 16x16

add a clear all button to the sign message page (addresses #943)

small translation-file handling / loading changes and re-work comments to be clearer

Update to require IE 5.1 as it is required to build on mingw64.

move label placeholdertext from sendcoinsentry.cpp to ui-file

Remove HTML font crap from "Wallet" message (fix for #945)

Previously trying to create a multisig address that required less than
one signature would output something like the following:

"wrong number of keys(got 1, need at least 0)"

remove obsolete BackupWallet() entry in wallet.h

We already require XP, this just fixes Mingw64 build.

add bitcoin-qt.rc to OTHER_FILES (shown in Qt Creator)

fix 2 compiler warnings

fix DEPENDPATH in the project file, as json has no include sub-dir and src was in twice

remove duplicate definition of SecureString in util.h

remove unused typedef in serialize.h

SecureString was moved to allocators.h in commit 6cb6d623