cmd/compile/internal/noder: replace recompile library error messages

Replaces 'recompile library' error messages with the more accurate
'recompile package' globally.

Change-Id: I7247964c76f1fcb94feda37c78bdfb8a1b1a6492
Reviewed-on: https://go-review.googlesource.com/c/go/+/626696
Reviewed-by: Alan Donovan <adonovan@google.com>
Commit-Queue: Tim King <taking@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

Author: timothy-king

src/cmd/compile/internal/importer/gcimporter.go

@@ -213,7 +213,7 @@ func Import(packages map[string]*types2.Package, path, srcDir string, lookup fun
 
 	switch hdr {
 	case "$$\n":
-		err = fmt.Errorf("import %q: old textual export format no longer supported (recompile library)", path)
+		err = fmt.Errorf("import %q: old textual export format no longer supported (recompile package)", path)
 
 	case "$$B\n":
 		// TODO(taking): minimize code delta with src/go/internal/gcimporter.Import.

src/cmd/compile/internal/noder/import.go

@@ -308,7 +308,7 @@ func findExportData(f *os.File) (r *bio.Reader, end int64, err error) {
 
 	// Expect $$B\n to signal binary import format.
 	if line != "$$B\n" {
-		err = errors.New("old export format no longer supported (recompile library)")
+		err = errors.New("old export format no longer supported (recompile package)")
 		return
 	}
 

src/go/internal/gcimporter/gcimporter.go

@@ -209,8 +209,7 @@ func Import(fset *token.FileSet, packages map[string]*types.Package, path, srcDi
 
 	switch hdr {
 	case "$$\n":
-		// TODO(taking): 's/(recompile library)/(recompile package)/g'.
-		err = fmt.Errorf("import %q: old textual export format no longer supported (recompile library)", path)
+		err = fmt.Errorf("import %q: old textual export format no longer supported (recompile package)", path)
 
 	case "$$B\n":
 		var exportFormat byte