
Add the ability to specify the current intended filename via a global
variable to goog.debug and change the module compiler to set this
when compiling in the "one eval per file mode".

This improves error reporting in the case of syntax errors, which happen
before the //@ sourceURL annotation in the eval is parsed.

R=nicksantos
DELTA=8 (5 added, 0 deleted, 3 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=6235


git-svn-id: 35241bd708fe29f1f6c7a4322d322e99ff93b95e@2494 0b95b8e8-c90f-11de-9d4f-f947ee5921c8

weitzj/closure-library,weitzj/closure-library