CVS log for loncom/auth/lonlogin.pm

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Keyword substitution: kv
Default branch: MAIN
Current tag: version_2_6_1

Bug 5577.

domainprefs.pm
- On log-in page, log-in box can use either an image or text.  DC can choose which of these to use, and override default image and text color and background.
- javascript functions - colchg_span() and get_id() added to support dhtml-driven change of colors in square boxes used for legend for background colors, when new colors are chosen from the color picker
- &Apache::loncommon::devalidate_domconfig_cache() called in more cases when configuration changes have been made for a domain.

lonlogin.pm
- replace html tags for start end end of page with loncommon::start_page() and loncommon::end_page()
- log-in box can use either an image (e.g., userauthentication.gif) or text (configurable by DC via "Domain Configuration")

loncommon.pm
-  &designparm() will retrieve settings for log-in box header on log-in page: image, text color, and background color.
- &endbodytag() can take an optional argument (a ref to a hash) which if key of noredirectlink is true in the hash will suppress display of a 'Continue' link in the case where the $env{'internal.head.redirect'} exists.

default.tab
- new parameters added for default log-in box header - a default image, and default colors for text and background.