Go patch committed: Add AST dumper

[Ian Lance Taylor]

This patch, written by Roberto Lublinerman at Google, adds an option to
gccgo to dump the gccgo AST before converting to GENERIC.  Bootstrapped
and ran Go testsuite on x86_64-unknown-linux-gnu.  Committed to
mainline.

Ian


2011-08-02  Roberto Lublinerman  <rluble@gmail.com>

	* Make-lang.in (GO_OBJS): Add go/ast-dump.o.
	(go/ast-dump.o): New target.
	(go/expressions.o): Depend on go/gofrontend/ast-dump.h.
	(go/statements.o): Likewise.


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