[llgo] Roll gofrontend forward

Switch gofrontend to using go.googlesource.com, and
update to 81eb6a3f425b2158c67ee32c0cc973a72ce9d6be.

There are various changes required to update to the
go 1.5 runtime:

typemap.go is changed to accommodate the change in representation for equal/hash algorithms, and the removal of the zero value/type.
CMakeLists.txt is updated to add the build tree to the package search path, so internal packages, which are not installed, are found.
various files changes due to removal of __go_new_nopointers; the same change as in D11863, but with NoUnwindAttribute added to the added runtime functions which are called with "callOnly".
minor cleanups in ssa.go while investigating issues with unwinding/panic handling.

Differential Revisision: http://reviews.llvm.org/D15188

llvm-svn: 263536

1 files changed, 2 insertions, 2 deletions

diff --git a/llgo/third_party/gofrontend/libgo/go/runtime/error.go b/llgo/third_party/gofrontend/libgo/go/runtime/error.go
index d759a54a519..c4621b6f858 100644
--- a/llgo/third_party/gofrontend/libgo/go/runtime/error.go
+++ b/llgo/third_party/gofrontend/libgo/go/runtime/error.go
@@ -9,9 +9,9 @@ type Error interface {
 	error
 
 	// RuntimeError is a no-op function but
-	// serves to distinguish types that are runtime
+	// serves to distinguish types that are run time
 	// errors from ordinary errors: a type is a
-	// runtime error if it has a RuntimeError method.
+	// run time error if it has a RuntimeError method.
 	RuntimeError()
 }