Set install reason for a package in the local database.
The provided package object must be from the local database or this method
will fail. The write to the local database is performed immediately.
@param pkg the package to update
@param reason the new install reason
@return 0 on success, -1 on error (pm_errno is set accordingly)
Set install reason for a package in the local database. The provided package object must be from the local database or this method will fail. The write to the local database is performed immediately. @param pkg the package to update @param reason the new install reason @return 0 on success, -1 on error (pm_errno is set accordingly)