for runtime, es6 use .mjs

Author: bobzhang

jscomp/core/js_packages_info.ml

@@ -82,7 +82,7 @@ type t =
 let runtime_package_specs : t = {
   name = Pkg_runtime;
   module_systems =[
-    {module_system = Es6; path = "lib/es6"; suffix = Js};
+    {module_system = Es6; path = "lib/es6"; suffix = Mjs};
     {module_system = NodeJS; path = "lib/js"; suffix = Js};
   ]
 }   

jscomp/others/release.ninja

@@ -1,5 +1,5 @@
 
-bsc_flags = -no-keep-locs -no-alias-deps -bs-no-version-header -bs-no-check-div-by-zero -nostdlib  -bs-cross-module-opt -bs-package-name bs-platform -bs-package-output commonjs:lib/js  -bs-package-output es6:lib/es6   -nopervasives  -unsafe  -w +50 -warn-error A  -open Bs_stdlib_mini -I ./runtime
+bsc_flags = -no-keep-locs -no-alias-deps -bs-no-version-header -bs-no-check-div-by-zero -nostdlib  -bs-cross-module-opt -bs-package-name bs-platform -bs-package-output commonjs:lib/js  -bs-package-output es6:lib/es6:.mjs   -nopervasives  -unsafe  -w +50 -warn-error A  -open Bs_stdlib_mini -I ./runtime
 
 rule cc
     command = $bsc -bs-cmi -bs-cmj $bsc_flags   -I others  $in

jscomp/runtime/release.ninja

@@ -1,5 +1,5 @@
 
-bsc_no_open_flags =  -no-keep-locs -no-alias-deps -bs-no-version-header -bs-no-check-div-by-zero -nostdlib  -bs-cross-module-opt -bs-package-name bs-platform -bs-package-output commonjs:lib/js  -bs-package-output es6:lib/es6  -nopervasives  -unsafe -w +50 -warn-error A
+bsc_no_open_flags =  -no-keep-locs -no-alias-deps -bs-no-version-header -bs-no-check-div-by-zero -nostdlib  -bs-cross-module-opt -bs-package-name bs-platform -bs-package-output commonjs:lib/js  -bs-package-output es6:lib/es6:.mjs  -nopervasives  -unsafe -w +50 -warn-error A
 bsc_flags = $bsc_no_open_flags -open Bs_stdlib_mini
 
 rule cc

jscomp/stdlib-406/release.ninja

@@ -1,5 +1,5 @@
 
-bsc_flags = -no-keep-locs -no-alias-deps -bs-no-version-header -bs-no-check-div-by-zero -nostdlib  -bs-cross-module-opt -bs-package-name bs-platform -bs-package-output commonjs:lib/js  -bs-package-output es6:lib/es6   -w -9-3-106 -warn-error A  -I runtime  -I others
+bsc_flags = -no-keep-locs -no-alias-deps -bs-no-version-header -bs-no-check-div-by-zero -nostdlib  -bs-cross-module-opt -bs-package-name bs-platform -bs-package-output commonjs:lib/js  -bs-package-output es6:lib/es6:.mjs   -w -9-3-106 -warn-error A  -I runtime  -I others
 
 rule cc
     command = $bsc -bs-cmi -bs-cmj $bsc_flags   -I stdlib-406  $in

scripts/ninja.js

@@ -868,7 +868,7 @@ async function runtimeNinja(devmode = true) {
   var externalDeps = devmode ? [compilerTarget] : [];
   var ninjaOutput = devmode ? "build.ninja" : "release.ninja";
   var templateRuntimeRules = `
-bsc_no_open_flags =  ${commonBsFlags} -bs-cross-module-opt -bs-package-name bs-platform -bs-package-output commonjs:lib/js  -bs-package-output es6:lib/es6  -nopervasives  -unsafe -w +50 -warn-error A
+bsc_no_open_flags =  ${commonBsFlags} -bs-cross-module-opt -bs-package-name bs-platform -bs-package-output commonjs:lib/js  -bs-package-output es6:lib/es6:.mjs  -nopervasives  -unsafe -w +50 -warn-error A
 bsc_flags = $bsc_no_open_flags -open Bs_stdlib_mini
 ${ruleCC(ninjaCwd)}
 ${ninjaQuickBuidList([
@@ -963,7 +963,7 @@ async function othersNinja(devmode = true) {
   var ninjaCwd = "others";
 
   var templateOthersRules = `
-bsc_flags = ${commonBsFlags} -bs-cross-module-opt -bs-package-name bs-platform -bs-package-output commonjs:lib/js  -bs-package-output es6:lib/es6   -nopervasives  -unsafe  -w +50 -warn-error A  -open Bs_stdlib_mini -I ./runtime
+bsc_flags = ${commonBsFlags} -bs-cross-module-opt -bs-package-name bs-platform -bs-package-output commonjs:lib/js  -bs-package-output es6:lib/es6:.mjs   -nopervasives  -unsafe  -w +50 -warn-error A  -open Bs_stdlib_mini -I ./runtime
 ${ruleCC(ninjaCwd)}
 ${
   devmode
@@ -1088,7 +1088,7 @@ async function stdlibNinja(devmode = true) {
   // deprecations diabled due to string_of_float
   var warnings = "-w -9-3-106 -warn-error A";
   var templateStdlibRules = `
-${bsc_flags} = ${commonBsFlags} -bs-cross-module-opt -bs-package-name bs-platform -bs-package-output commonjs:lib/js  -bs-package-output es6:lib/es6   ${warnings}  -I runtime  -I others
+${bsc_flags} = ${commonBsFlags} -bs-cross-module-opt -bs-package-name bs-platform -bs-package-output commonjs:lib/js  -bs-package-output es6:lib/es6:.mjs   ${warnings}  -I runtime  -I others
 ${ruleCC(ninjaCwd)}
 ${ninjaQuickBuidList([
   [