commit changes from July 11 to July 16 the week that cvs.openacs.org was down, added concept of membership and membership pricing in dotlrn-ecommerce shopping cart various bug fixes and modifications to dotlrn-ecommerce
get dotlrn-ecommerce to install.oracle, move queries from tcl files into xql files, removed empty xql files, shortened view names particularly in dotlrn-ecommerce-membership-create due to oracle's limit on identifier names