Move all main methods to tool/.

pkg/front_end/lib/src/fasta/analyzer/analyzer_compile.dart

Index: pkg/front_end/lib/src/fasta/analyzer/analyzer_compile.dart
diff --git a/pkg/front_end/lib/src/fasta/analyzer/analyzer_compile.dart b/pkg/front_end/lib/src/fasta/analyzer/analyzer_compile.dart
index d348e70c68d7c87ceeb9b429edb6c876e6b82ce4..dd90575a369a1801556f75eb328cb3ca21c7efe4 100644
--- a/pkg/front_end/lib/src/fasta/analyzer/analyzer_compile.dart
+++ b/pkg/front_end/lib/src/fasta/analyzer/analyzer_compile.dart
@@ -53,7 +53,7 @@ class AnalyzerCompileTask extends CompileTask {
   }
 }
 
-main(List<String> arguments) async {
+mainEntryPoint(List<String> arguments) async {
   for (int i = 0; i < iterations; i++) {
     if (i > 0) {
       print("\n");