Add new PLIST_IS_* helper macros for the different plist node types
Add new PLIST_IS_* helper macros for the different plist node types

Instead of e.g.:
    if (plist_get_node_type(plist) == PLIST_STRING)
you can now write:
    if (PLIST_IS_STRING(plist))

libimobiledevice-win32/libplist,libimobiledevice-win32/libplist,Tatsh/libplist,libimobiledevice-win32/libplist,Tatsh/libplist,Tatsh/libplist,libimobiledevice-win32/libplist,libimobiledevice/libplist,libimobiledevice/libplist,libimobiledevice/libplist,Tatsh/libplist