#i27364# set line count of dropdown to 9 for document list of navigator on Writer
#i124422# adjust include path for libc++ headers to the selected XCode folder

While XCode5's xcode-select supports the -p and --print-path options, XCode4
officially only knows -print-path. XCode4 seems to tolerate --print-path though
(tested on XCode4.6), so this can be universally used.

Patch-by: Thorsten Wagner <thorsten.wagner.4@gmail.com>
Review-by: Herbert Duerr <hdu@apache.org>