Switch to use new text field implementation for <input type="text">

[Adele Peterson]

This is the master bug to track the switch to our new NSView-less implementation of <input type="text">

[Justin Garcia]

Adding two blockers: 7124 and 7123.  These deal with carets jumping out of their content editable region when you hit the edges.

[Adele Peterson]

I removed all non-blocking bugs from the "depends on" list, and I added the "NativeTextField" keyword to remaining text field issues that aren't blocking the switch.

You can see these issues with this query:
http://bugzilla.opendarwin.org/buglist.cgi?query_format=advanced&short_desc_type=allwordssubstr&short_desc=&long_desc_type=substring&long_desc=&bug_file_loc_type=allwordssubstr&bug_file_loc=&keywords_type=allwords&keywords=NativeTextField&bug_status=UNCONFIRMED&bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&emailassigned_to1=1&emailtype1=substring&email1=&emailassigned_to2=1&emailreporter2=1&emailcc2=1&emailtype2=substring&email2=&bugidtype=include&bug_id=&votes=&chfieldfrom=&chfieldto=Now&chfieldvalue=&cmdtype=doit&order=Reuse+same+sort+as+last+time&field0-0-0=noop&type0-0-0=noop&value0-0-0=