Fix getJSDocInfo to only return the jsdoc info for itself.
Change CheckAccessControls to use the default externs, which exposes this problem

R=johnlenz
DELTA=25 (6 added, 11 deleted, 8 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=6050


git-svn-id: http://closure-compiler.googlecode.com/svn/trunk@2427 b0f006be-c8cd-11de-a2e8-8d36a3108c74