Remove unused imports in macdeploy script
doc: Clarify wording about testing in README.md

Weaken and clarify the wording a bit, it currently implies that we get
more pull requests than we can ever handle which discourages
contribution.
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 #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)
osx: Fix missing dock menu with qt5

Qt5 Removed the qt_mac_set_dock_menu function and left no replacement. It was
later re-added and deprecated for backwards-compatibility.

Qt5.2 adds the non-deprecated QMenu::setAsDockMenu(). Use that when possible.
Merge pull request #4187

d16f6f8 Remove unused imports in macdeploy script (Federico Bond)
Merge pull request #4252

c21c74b osx: Fix missing dock menu with qt5 (Cory Fields)
Merge pull request #4218

4665b1a doc: Clarify wording about testing in README.md (Wladimir J. van der Laan)
VerifyDB progress