show Homebrew repo & origin in doctor

references: #4581, #4571
update SourceTree to 1.9.3.1
doc: tweak version numbers needed for migration
Add Cursorcerer.prefPane latest
Merge pull request #4605 from rolandwalker/sourcetree_1.9.3.1

update SourceTree to 1.9.3.1
Merge pull request #4603 from rolandwalker/doctor_homebrew_origin

show Homebrew repo & origin in doctor
Merge pull request #4612 from szhu/cursorcerer

Add Cursorcerer.prefPane latest
Upgrade Thunder.app to v2.6.2.1576
Merge pull request #4613 from tolbkni/thunder

Upgrade Thunder.app to v2.6.2.1576
Merge pull request #4609 from rolandwalker/doc_tweak_migration_vsns

doc: tweak version numbers needed for migration
Add WinXound
Google AppEngine Launcher updated to 1.9.5
Merge pull request #4616 from radeksimko/gae-update

Update Google AppEngine Launcher to 1.9.5
Merge pull request #4614 from alebcay/winxound

Add WinXound
Update GHC to 7.8.2-r5
Update OpenEmu version 1.0.3
Merge pull request #4618 from vinkla/openemu

Update OpenEmu version 1.0.3
Merge pull request #4617 from ndr-qef/ghc

Update GHC to 7.8.2-r5
Add Petite Chez Scheme, version 8.4
New cask file for the panini panorama viewer

Adds a new cask file for the panini panorama viewer. Unfortunately, the
latest download link does not seem to provide the mac DMG file, so a
specific version has to be used.