* Extended kspread/Functions.* to be able to dynamic add functions from within a plugin.
* Initial implementation of "Scripting Functions" which are KSpread Function's that will be able to reference scripts. It's disabled and will stay till I refactored package-handling to provide trusted scripts. * cleanup, unittest++, etc. CC_MAIL: email@example.com svn path=/trunk/koffice/; revision=600284