Update xchat.
Fix issue reported by static analyser: position is assigned but never used.
Drop perl-leopard since 10.6 is minimum supported version now.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	XChatAqua.xcodeproj/project.pbxproj
Merging new commits to Growl.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	xchat
Merge remote-tracking branch 'upstream/master'
Updating xchat.
Merge branch 'master' of github.com:xchataqua/xchataqua
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'

Conflicts:
	Mac/Growl
Merge branch 'master' of github.com:xover/xchataqua