Qt: Fix monospace font in osx 10.9

The "Monospace" hint was added in Qt 4.8, and it works as intended as opposed
to "TypeWriter" which fails to load a font.
release: Bump the OSX SDK to 10.7 for gitian builds

This fixes the display on Retina Macbooks. It also moves us away from depending
on the ancient XCode3 sdk.
Merge pull request #4228

e9df7f8 Qt: Fix monospace font in osx 10.9 (Cory Fields)
Merge pull request #4183

f40dbee remove CPubKey::VerifyCompact( ) which is never used (Kamil Domanski)
28b6c1d remove GetMedianTime( ) which is never used (Kamil Domanski)
5bd4adc remove LookupHostNumeric( ) which is never used (Kamil Domanski)
595f691 remove LogException( ) which is never used (Kamil Domanski)
f4057cb remove CTransaction::IsNewerThan which is never used (Kamil Domanski)
0e31e56 remove CWallet::AddReserveKey which is never used (Kamil Domanski)
Merge pull request #4206

79d06dc Remove redundant c_str (R E Broadley)
Merge pull request #3861

9ec0306 Add CODESEPARATOR/FindAndDelete() tests (Peter Todd)
[Qt] Fix Transaction details shows wrong To:
Merge pull request #4184

122549f Fix incorrect checkpoint data for testnet3 (David Hill)
Merge pull request #4195

f701da8 Doc: Always use absolute paths (Kosta Zertsekel)
Spelling fix in comment

Rebased-By: Wladimir J. van der Laan <laanwj@gmail.com>
Rebased-From: 3704a6a
[Qt] Fix Start bitcoin on system login
Merge pull request #4245

066d9a5 [Qt] Fix Start bitcoin on system login (Cozz Lovan)
Merge pull request #4132

d4e1c61 add DEFAULT_UPNP constant in net (Philip Kaufmann)
rename fNoListen to fListen and move to net

- better code readability and it belongs to net
- this is a prerequisite for a pull to add -listen to the GUI
Merge pull request #4229

2869b13 release: Bump the OSX SDK to 10.7 for gitian builds (Cory Fields)
gitian: Add cfields to gitian download scripts
No references to centralized databases in help text.
Merge pull request #4251 from theuni/cfields-pgp

gitian: Add cfields to gitian download scripts
Fix name of Cory's pgp key
Merge pull request #4249

b5ef85c No references to centralized databases in help text. (Pieter Wuille)