Search for main in the exported names of the main library, not in the library itself.

Search for main in the exported names of the main library, not in the library itself.

R=johnniwinther@google.com
BUG=http://dartbug.com/14762

Committed: https://code.google.com/p/dart/source/detail?r=29807

[Johnni Winther, 2013-11-04 11:57:22]

Can you add a unittest for duplicate export of 'main', similar to
package_root_test and/or import_test?

https://codereview.chromium.org/49003012/diff/1/sdk/lib/_internal/compiler/im...
File sdk/lib/_internal/compiler/implementation/compiler.dart (right):

https://codereview.chromium.org/49003012/diff/1/sdk/lib/_internal/compiler/im...
sdk/lib/_internal/compiler/implementation/compiler.dart:1047: if
(!main.isFunction()) {
If [main] is ambiguous, we should probably report the better error message here.

[kasperl, 2013-11-04 13:40:27]

PTAL.

[Johnni Winther, 2013-11-04 13:47:46]

lgtm

[kasperl, 2013-11-04 13:50:13]

Committed patchset #3 manually as r29807 (presubmit successful).