Stop using array literals

Fixes the build for people on OS X 10.6
Fix build on OS X 10.7 Lion and older by using CoreServices instead of CFNetwork
Note we only support OS X 10.6+ these days
note existance of CURLOPT_TCP_KEEPINTVL
Merge branch 'v3.x' into v4.x-beta

Conflicts:
	CURLHandleSource/CURLFTPSession.m
	CURLHandleSource/CURLHandle.m
	CURLHandleSource/CURLHandle.xcodeproj/project.pbxproj
	DevNotes.txt