Externs should be "Closure Compiler Authors" not "Closure Library Authors"

R=nicksantos
DELTA=1 (0 added, 0 deleted, 1 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=6224


git-svn-id: http://closure-compiler.googlecode.com/svn/trunk@2497 b0f006be-c8cd-11de-a2e8-8d36a3108c74
Update copyright for public externs

R=nicksantos
DELTA=52 (0 added, 0 deleted, 52 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=6225


git-svn-id: http://closure-compiler.googlecode.com/svn/trunk@2498 b0f006be-c8cd-11de-a2e8-8d36a3108c74