Make package:kernel's verifier pass fasta-compiled code, make fasta not return exitcode 1 for warni…

pkg/front_end/lib/src/fasta/compiler_command_line.dart

Index: pkg/front_end/lib/src/fasta/compiler_command_line.dart
diff --git a/pkg/front_end/lib/src/fasta/compiler_command_line.dart b/pkg/front_end/lib/src/fasta/compiler_command_line.dart
index 0a682cdca6bcbb83cb66c767a28661438fc5fdde..76364c6c4baa7a2319dbcc31fc84a9c5b0915079 100644
--- a/pkg/front_end/lib/src/fasta/compiler_command_line.dart
+++ b/pkg/front_end/lib/src/fasta/compiler_command_line.dart
@@ -160,7 +160,7 @@ class CompilerCommandLine extends CommandLine {
       // All command-line tools take only a single entry point and chase
       // dependencies, and provide a non-zero exit code when errors are found.
       ..chaseDependencies = true
-      ..setExitCodeOnProblem = true
+      ..setExitCodeOnProblem = false

[Siggi Cherem (dart-lang), 2017/08/21 20:01:51]

since the default is false, let's simply delete this line

       ..debugDump = cl.dumpIr
       ..verbose = cl.verbose
       ..verify = cl.verify;