[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, 1 insertions, 1 deletions

diff --git a/llgo/third_party/gofrontend/libgo/go/strconv/extfloat.go b/llgo/third_party/gofrontend/libgo/go/strconv/extfloat.go
index bed8b16bdae..019b4eebdc9 100644
--- a/llgo/third_party/gofrontend/libgo/go/strconv/extfloat.go
+++ b/llgo/third_party/gofrontend/libgo/go/strconv/extfloat.go
@@ -256,7 +256,7 @@ var uint64pow10 = [...]uint64{
 }
 
 // AssignDecimal sets f to an approximate value mantissa*10^exp. It
-// returns true if the value represented by f is guaranteed to be the
+// reports whether the value represented by f is guaranteed to be the
 // best approximation of d after being rounded to a float64 or
 // float32 depending on flt.
 func (f *extFloat) AssignDecimal(mantissa uint64, exp10 int, neg bool, trunc bool, flt *floatInfo) (ok bool) {