:Fixed tokens in title attribute - was not using correct variable to get the title attirubute value.

bug report #626932 by jtsnow,jcfiala:_link_sanitize now checks that field attributes are an array before adding defaults to them.

bug report #628902 by strangeways,jcfiala: Fixed removing 'nofollow' from the rel array, which had been generating a preg_match error.

bug report #376818 by pauline_perren,jeffschuler,dropcube: extended the url field to accept 2048 characters, god help us.

User interface #335281 by thePanz, jcfiala: Now if the title matches the link title, the title is not included in the link.

bug report #660138 by chris_bbg888: Changing validation to include letters with umlouts.

bug report #625552 by jcfiala: removed default values from field value attributes so that the field attributes can properly override them.  Also added simpletest to test the fix.

Bug Report #587078 by BenStallings: ['attributes'] was not being converted to an empty array for view-related displays of links without attributes.

Fix for bug #587078: 	Initializing item attributes as array if it is not set to avoid Unsupported operand types error.

Patch #580988, hook_field('load',...) should return an array of additions to be added to the node object. Ensures that data get cached correctly.

Fixed bug #516310, by frega, svogel  and dropcube: Initialized the attributes array correctly, and populated it with default values.

Applied patch provided by KarenS to use the current CCK DB scheme. #92804. Awesome! Thanks again Karen.

Removes extra code, improves consistency with other field modules. Displays field label when using contemplate. Thanks creazion_dev! Issue #82072.