Update VM to latest spec. Referencing a name that is imported
from more than one library is no longer a compile-time error.
If one of the sources of an ambiguous reference is a dart library,
the dart library declaration is automatically hidden.
Also fixes a bug where looking up a getter name in a library
found the getter even though the name is filtered out in the
'hide' combinator.
Long-term we should fix the need for repeatedly convert between
the mangled getter and setter names and the untangled name.
Fixes 12915, 12913, 12724.
R=regis@google.com
Review URL: https://codereview.chromium.org//23484020
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@27312 260f80e4-7a28-3924-810f-c04153c831b5
For historical reasons, the VM is currently too lenient when parsing library parts. Files that get loaded through a 'part' directive must start with a 'part of libraryname;' clause. The VM so far has not reported an error if the clause is missing.
This change enforces the grammar as the Spec mandates it. Library parts that do not start with 'part of' will no longer compile.
R=srdjan@google.com
Review URL: https://codereview.chromium.org//14791005
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@22278 260f80e4-7a28-3924-810f-c04153c831b5
hausner@google.com