Dartc's 'can't use a type variable in static context' message now works the same way as 'NO_SUCH_TY…

Dartc's 'can't use a type variable in static context' message now works the same way as 'NO_SUCH_TYPE' 

The error message for can't use a type variable in a static
context is useful, but it was an unconditional error.  Really, 
the message is just a more friendly version of 'NO_SUCH_TYPE' and 
needs to work in the same way, being a warning in some contexts, and
a compile time error in others.

http://code.google.com/p/dart/issues/detail?id=2374

Committed: https://code.google.com/p/dart/source/detail?r=6146

[scheglov, 2012-04-03 19:46:36]

LGTM