Support for excluded files/folders.

Support for excluded files/folders.

R=brianwilkerson@google.com, paulberry@google.com
BUG=

Committed: https://code.google.com/p/dart/source/detail?r=39046

[Brian Wilkerson, 2014-08-08 19:19:35]

LGTM

https://codereview.chromium.org/456893002/diff/1/pkg/analysis_server/lib/src/...
File pkg/analysis_server/lib/src/context_manager.dart (right):

https://codereview.chromium.org/456893002/diff/1/pkg/analysis_server/lib/src/...
pkg/analysis_server/lib/src/context_manager.dart:157: ChangeSet changeSet = new
ChangeSet();
Can we merge this into the loop above so that each context gets updated once? (I
suppose it's not a big deal if we can't because we won't do any wasted analysis
between the two calls, but it still seems like it would be more efficient.)

https://codereview.chromium.org/456893002/diff/1/pkg/analysis_server/lib/src/...
pkg/analysis_server/lib/src/context_manager.dart:195: if (child.shortName ==
'packages') {
The string 'packages' should be a constant.

This and other occurrences (such as line 227) should be extracted into a method
so that if the condition changes we only have to change it in one place.

[Paul Berry, 2014-08-08 19:37:53]

lgtm

[scheglov, 2014-08-08 19:42:15]

Committed patchset #1 manually as 39046 (presubmit successful).