Netbeans 7.1 fix of #203568 - Broken Code semantic completion for background property with multiple values

  http://netbeans.org/bugzilla/show_bug.cgi?id=203568

Description:
CSS property values error checking reports false errors quite often 
especially for aggregated css properties (e.g.background or font). Code 
completion doesn't work for them well either.

Fix:
Proper fix requires the css grammar resolver to be completely rewritten, 
which has been already done in

http://hg.netbeans.org/main-golden/rev/6d47f0669a2c

But since the changes are really extensive, we decided to put the fix 
into 7.1.1 and just disable to error checks in 7.1

Risk: none, just a few lines of code triggering the css property values 
checks has been commented out.

Changeset (already integrated): 
http://hg.netbeans.org/releases/rev/3b976b6dcd62

Thanks,
Marek