strip a few more unneeded runtime functions

Strip a few more traceback printing related functions in the runtime, new for Go 1.16. Also test that GODEBUG=inittrace=1 does not print anything when -tiny is passed.

runtime_strip.go

@@ -89,8 +89,8 @@ func stripRuntime(filename string, file *ast.File) {
 			case "traceback.go":
 				// only used for printing tracebacks
 				switch x.Name.Name {
-				case "tracebackdefers", "traceback", "tracebacktrap", "traceback1",
-					"goroutineheader", "tracebackothers", "tracebackHexdump":
+				case "tracebackdefers", "printcreatedby", "printcreatedby1", "traceback", "tracebacktrap", "traceback1", "printAncestorTraceback",
+					"printAncestorTracebackFuncInfo", "goroutineheader", "tracebackothers", "tracebackHexdump", "printCgoTraceback":
 					x.Body.List = nil
 				case "printOneCgoTraceback":
 					x.Body = ah.BlockStmt(ah.ReturnStmt(ah.IntLit(0)))

testdata/scripts/tiny.txt

@@ -3,7 +3,7 @@ env GOPRIVATE=test/main
 # Tiny mode
 garble -tiny build
 ! binsubstr main$exe 'main.go' 'fmt/print.go'
-env GODEBUG='allocfreetrace=1,gcpacertrace=1,gctrace=1,scavenge=1,scavtrace=1,scheddetail=1,schedtrace=10'
+env GODEBUG='allocfreetrace=1,gcpacertrace=1,gctrace=1,inittrace=1,scavenge=1,scavtrace=1,scheddetail=1,schedtrace=10'
 ! exec ./main$exe
 stderr '^\(0x[\d\w]{6,8},0x[\d\w]{6,8}\)' # interfaces/pointers print correctly
 # TODO: Make -tiny remove all line information again.