#213038 Loosen regex for month and day names to pick up non-ASCII characters like the German umlaute.

#189093 follow up to previous fix of bug that caused Views arguments to disappear, simplify the way Date arguments are created. The previous more complicated handling is a throwback to the way CCK used to work and was never simplified when CCK changed.

#189093 Fix mysterious bug that was causing Views arguments to disappear. It turned out to be coming from a use of content_fields() that was nested inside another call to content_fields() from another function which broke only in certain environments. Much thanks to marcp for providing a database dump of a problem setup that helped me find this elusive bug!

#189093 More reworking of the way views files and functions are included and called to hopefully fix erratic problems of missing arguments.

#189093 Trying a different method of including views files and functions to see if it will fix the mysterious errors reported in numerous issues where arguments disappear.

Get rid of constants for DATE_TIMEZONES and DATE_API_PATH since they sometimes don't get defined before they are needed.

Lots of fixes for the update processes. Get rid of older updates that are re-done in later updates and create a data_integrity and db_integrity update.

#163712 fix some subtle problems in link titles and query parameters when working with partial ISO dates, like only year and month.

#175914 make sure month and day don't get set to zero when creating timestamps to format dates, since zero values will revert to the previous day. Patch by derhasi.

#175914 make sure month and day don't get set to zero when creating timestamps to format dates, since zero values will revert to the previous day. Patch by derhasi.

#160052 make sure no errors are thrown when gmmktime is called and 'all' is one of the arguments. Thanks to mmoreno for the help.