Added util_background_exec proc and friends for executing chunks of code in a background thread in a safe manner. There seem to be some thread issues, though :(
- Moving Malte's enhanced survey from the accidentally-created "oacs4" repository he created into openacs-4/contrib.- Malte's commit line was: "Added new survey module version for head."
making sure import_from_files proc does not produce error messages trying to find correct charsets for a locale if there are no files for that locale anyway
install.xml would be loaded on install index page but no longer be in memory on package install page. Fixed by loading document again on package page. See discussion here: http://openacs.org/forums/message-view?message_id=122266