Don't assume that rangeOfCharacterFromSet:options: always returns a l…

…ength of 1. This fixes a bug where copying text where a line ends in a surrogate pair fails because it creates an invalid UTF-16 string, chopping the surrogate pair in half. Issue 3544.

Move _truncatedValue ivar into interface

Handle failures of CTRunGetGlyphsPtr and CTRunGetPositionsPtr

Properly retain strings gotten from NSUserDefaults

Port over fix to bug 2662 from master branch (leaking file descriptors)

Fix PTYTask to use objc 1.0

Fix PTYTask to use objc 1.0

Merge branch 'v2' of https://github.com/gnachman/iTerm2 into v2

Remove dependence on Address Book framework

Remove dependence on Address Book framework