Added Tag to Primitive for use with client application akin to Control.Tag property of winforms.
Added Tag to Primitive for use with client application akin to Control.Tag property of winforms.

git-svn-id: e915c4f8b2ea2a6e63cbe989b51c0994a698cc26@3554 52acb1d6-8a22-11de-b505-999d5b087335

logicmoo/libopenmetaverse,radegastdev/libopenmetaverse,logicmoo/libopenmetaverse,radegastdev/libopenmetaverse,logicmoo/libopenmetaverse,tectronics/libopenmetaverse,radegastdev/libopenmetaverse,logicmoo/libopenmetaverse,radegastdev/libopenmetaverse,logicmoo/libopenmetaverse,logicmoo/libopenmetaverse,tectronics/libopenmetaverse,tectronics/libopenmetaverse,tectronics/libopenmetaverse