add CLI option to syntax check script, fixes #9426

[bahamas10]

discussion in #9426

This is my first contribution to node core so I may have missed a few files when trying to add this functionality... but in my testing everything worked as expected.

$ cat ./good.js
var a = 'foo';
$ ./out/Release/node -c ./good.js
$ echo $?
0

$ cat ./bad.js
var a foo;
$ ./out/Release/node -c ./bad.js
/Users/dave/dev/node/bad.js:1
var a foo;
      ^^^
SyntaxError: Unexpected identifier
    at startup (node.js:104:54)
    at node.js:826:3
$ echo $?
1

[OrangeDog]

Someone will want some tests submitted.

[bahamas10]

@OrangeDog tests added... example output below:

dave - manilla darwin ~/dev/node/test/simple (git:dave-1426873415) $ ../../out/Release/node test-cli-syntax.js 
calling /Users/dave/dev/node/out/Release/node -c /Users/dave/dev/node/test/fixtures/syntax/good_syntax.js
ok
calling /Users/dave/dev/node/out/Release/node --check /Users/dave/dev/node/test/fixtures/syntax/good_syntax.js
ok
calling /Users/dave/dev/node/out/Release/node -c /Users/dave/dev/node/test/fixtures/syntax/good_syntax_shebang.js
ok
calling /Users/dave/dev/node/out/Release/node --check /Users/dave/dev/node/test/fixtures/syntax/good_syntax_shebang.js
ok
calling /Users/dave/dev/node/out/Release/node -c /Users/dave/dev/node/test/fixtures/syntax/bad_syntax.js
ok
calling /Users/dave/dev/node/out/Release/node --check /Users/dave/dev/node/test/fixtures/syntax/bad_syntax.js
ok
calling /Users/dave/dev/node/out/Release/node -c /Users/dave/dev/node/test/fixtures/syntax/bad_syntax_shebang.js
ok
calling /Users/dave/dev/node/out/Release/node --check /Users/dave/dev/node/test/fixtures/syntax/bad_syntax_shebang.js
ok

[jasnell]

@bahamas10 .. thank you for this. At this point, because we are working on migrating active development to http://github.com/nodejs/node, this is not something that we would land here. The best thing would be to close this PR and open a new updated one against master on http://github.com/nodejs/node where it would have the best chance of getting a full review.

[bahamas10]

thanks @jasnell created nodejs/node#2411