code review 2540041: Export changes from Google-internal version:

Export changes from Google-internal version:
	          - faster text parsing
                  - use numbers instead of repeated Xs for package import name conflict resolution

[dsymonds, 2010-10-16 00:15:08]

Hello r@golang.org (cc: golang-dev, golang-dev@googlegroups.com),

I'd like you to review this change.

[r, 2010-10-16 00:25:48]

LGTM

[dsymonds, 2010-10-16 00:33:26]

*** Submitted as 15e1ad1f1315 ***

		Export changes from Google-internal version:
	          - faster text parsing
                  - use numbers instead of repeated Xs for package import name
conflict resolution

R=r
CC=golang-dev
http://codereview.appspot.com/2540041