for dev version the bsc compiler is called bsc instead of bsc.exe

For CI mode, always do a clean

Author: bobzhang

.gitignore

@@ -140,4 +140,5 @@ native/
 vendor/ocaml
 jscomp/.lsp
 .vscode/launch.json
-tracing*.json
+tracing*.json
+darwin/bsc

scripts/install.js

@@ -203,6 +203,10 @@ function provideCompiler() {
 
     var filePath = path.join(lib_dir, "release.ninja");
     fs.writeFileSync(filePath, releaseNinja, "ascii");
+    cp.execFileSync(ninja_bin_output, ["-f", "release.ninja","-t", "clean"], {
+      cwd: lib_dir,
+      stdio: [0, 1, 2]
+    });
     cp.execFileSync(ninja_bin_output, ["-f", "release.ninja"], {
       cwd: lib_dir,
       stdio: [0, 1, 2]

scripts/ninja.js

@@ -407,7 +407,7 @@ function ninjaBuild(outputs, inputs, rule, deps, cwd, overrides) {
   var fileOutputs = targetsToString(outputs, cwd);
   var fileInputs = targetsToString(inputs, cwd);
   var stmt = `build ${fileOutputs} : ${rule} ${fileInputs}`;
-  // deps.push(pseudoTarget('../lib/bsc.exe'))
+  // deps.push(pseudoTarget('../lib/bsc'))
   if (deps.length > 0) {
     var fileDeps = targetsToString(deps, cwd);
     stmt += ` | ${fileDeps}`;
@@ -861,7 +861,7 @@ function generateNinja(depsMap, allTargets, cwd, extraDeps = []) {
   return build_stmts;
 }
 
-var COMPILIER = `../${process.platform}/bsc.exe`;
+var COMPILIER = `../${process.platform}/bsc`;
 var BSC_COMPILER = `bsc = ${COMPILIER}`;
 var compilerTarget = pseudoTarget(COMPILIER);
 
@@ -1634,7 +1634,7 @@ build common/bs_version.ml : mk_bsversion build_version.js ../package.json
 
 build ../${
     process.platform
-  }/bsc.exe: link js_parser/js_parser.cmxa stubs/stubs.cmxa ext/ext.cmxa common/common.cmxa syntax/syntax.cmxa depends/depends.cmxa super_errors/super_errors.cmxa outcome_printer/outcome_printer.cmxa core/core.cmxa main/js_main.cmx
+  }/bsc: link js_parser/js_parser.cmxa stubs/stubs.cmxa ext/ext.cmxa common/common.cmxa syntax/syntax.cmxa depends/depends.cmxa super_errors/super_errors.cmxa outcome_printer/outcome_printer.cmxa core/core.cmxa main/js_main.cmx
     libs = ocamlcommon.cmxa
 build ../${
     process.platform