net: rename TestAddr6 to avoid gotest confusion

    
    On ppc64 gotest treats data variables whose names begin with "Test" as
    tests to run.  This is to support the function descriptors used for
    ppc64 ELF ABI v1.  This causes gotest to think that TestAddr6 is a
    test, when it is actually a variable.  For a simple fix until we can
    figure out how to write gotest properly, rename the variable.
    
    Fixes golang/go#23623
    
    Reviewed-on: https://go-review.googlesource.com/90995

From-SVN: r257235

gcc/go/gofrontend/MERGE

-a347356d0f432cafb69f0cc5833d27663736a042
+973ae0a30c17e736f57377fa32371719b9ebccf6
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.

libgo/go/net/dnsclient_unix_test.go

@@ -27,7 +27,7 @@ var goResolver = Resolver{PreferGo: true}
 const TestAddr uint32 = 0xc0000201
 
 // Test address from 2001:db8::/32 block, reserved by RFC 3849 for documentation.
-var TestAddr6 = [16]byte{0x20, 0x01, 0x0d, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}
+var VarTestAddr6 = [16]byte{0x20, 0x01, 0x0d, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}
 
 var dnsTransportFallbackTests = []struct {
 	server  string
@@ -506,7 +506,7 @@ func TestGoLookupIPWithResolverConfig(t *testing.T) {
 							Class:    dnsClassINET,
 							Rdlength: 16,
 						},
-						AAAA: TestAddr6,
+						AAAA: VarTestAddr6,
 					})
 				}
 			}
@@ -1230,7 +1230,7 @@ func TestStrictErrorsLookupIP(t *testing.T) {
 							Class:    dnsClassINET,
 							Rdlength: 16,
 						},
-						AAAA: TestAddr6,
+						AAAA: VarTestAddr6,
 					},
 				}
 			default: