simplenews submission from other modules

hi,
here is a Patch for simplenews that I think would be usefull,

Introduction
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Somethimes Nodes are not created by the user via a form on the Homepage. Sometimes other modules create nodes. This could be because many nodes must be created (import) or creation of nodes is a direct result of the creation of an other node (Image) or it is not created via the Homepage (IM, Mail).
In most of this cases you want the news be send out via e-mail irregarding the path of creation.
This patch should improve simplenews so it can non-form-creation of simplenews nodes.

problem
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When another module creates a simplenews node without this patch the node is created correctly but the values in the database-table are not set. This results in strange behavior. One example is that the default int value of the table is 0. When you create a new the news will get the status of 0 which means it will not be send out. This happens even if the default is to send out newsletters emedeatly.

sollution
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This patch checks the values of the simplenews form prior to saving it in the DB.
When the node was created from an other module without using a form the form is empty.
In this case the default values are inserted before the node is saved.

maybe you could think about merging this patch into HEAD.

thanks
angel