Replace leading "../" in absolute paths with "$(SOURCE_ROOT)/../" to avoid
the need to manually edit paths in the Xcode project file.
Also, all group files that have their group set to "path relative to group"
so replace all absolute paths in group files with the appropriate number
of leading "../" and replace "ios-device" in paths with "lobuilddir-symlink".
Lastly, verify that every file listed in the Xcode sidebar exists. A couple
dozen files in the core group have been moved or deleted in LibreOffice so
those were removed.
Signed-off-by: Patrick Luby <patrick.luby@collabora.com>
Change-Id: I09ef66273b049e75066e0a5b2589c80c93db0a77
