If the application's Info.plist contains the key
'NSPhotoLibraryUsageDescription', we know that we can safely link in
qiosnsphotolibrarysupport without violating AppStore requirements.
This is a simple feature that doesn't introduce additional qmake
API for doing app deployment with optional iOS QPA plugins.
[ChangeLog][iOS] Starting from iOS 10, Apple requires all apps
that need access to photos to have the key
'NSPhotoLibraryUsageDescription' in the Info.plist.
Therefore, to get the same support in Qt (when, e.g., using
a file dialog), the Info.plist assigned to QMAKE_INFO_PLIST
will need this key as well.
Change-Id: I7a93afe24b589cad96d5a1d9e2a155ad1671178a
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Jake Petroules <jake.petroules@qt.io>
78ee77f491