[whatwg] Please make < inside tags a parse error

[Henri Sivonen]

The new treatment of < inside tags is
  * Potentially very confusing for authors
  * Different from previous de jure parsing
  * Different from what shipped Gecko and WebKit do.

Therefore, please add an entry for < to tag name state, before  
attribute name state, attribute name state, after attribute name  
state and attribute value (unquoted) state:

U+003C LESS-THAN SIGN (<)
   Parse error. Then treat according to the "Anything else" entry below.

-- 
Henri Sivonen
hsivonen at iki.fi
http://hsivonen.iki.fi/