Cocoa: Use internal style mask to disable resizing popup parents

Using QCocoaWindow::windowStyleMask() resets some private flags
Cocoa sets when showing sheets.

Task-number: QTBUG-33126
Change-Id: I34f0713f98e81e7010b0b7620ee24ea30f04dcff
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
iOS: Resolve location of crt.o at build time, not qmake time

By referring to crt.o by $(SDK) we allow Xcode to switch between the
iPhoneSimulator and the iPhoneOS SDKs.

Change-Id: I33d9f30b2f5a8f085dc4ddfc6e2ef228d02d639c
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>
Doc: Restore QDoc's use of the \since

-one argument: assume it is the Qt version
-more than one argument: copy verbatim

Task-number: QTBUG-32172
Change-Id: Iaf5ec538f23abf4d1dfdf50bffcbbdede56d0b22
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Martin Smith <martin.smith@digia.com>