test: bump --stack-size to stop child fails on ARM

On ARM, we get a "Maximum call stack size exceeded" when using
require() in the child process, bump it up a bit to avoid the
failures so we can test what we are actually after

Reviewed-By: Fedor Indutny <fedor@indutny.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
PR-URL: #14

test/simple/test-child-process-fork-exec-argv.js

@@ -31,7 +31,7 @@ if (process.argv[2] === 'fork') {
 } else if (process.argv[2] === 'child') {
   fork(__filename, ['fork']);
 } else {
-  var execArgv = ['--harmony_proxies', '--stack-size=64'];
+  var execArgv = ['--harmony_proxies', '--stack-size=256'];
   var args = [__filename, 'child', 'arg0'];
 
   var child = spawn(process.execPath, execArgv.concat(args));

test/simple/test-process-exec-argv.js

@@ -25,7 +25,7 @@ var spawn = require('child_process').spawn;
 if (process.argv[2] === 'child') {
   process.stdout.write(JSON.stringify(process.execArgv));
 } else {
-  var execArgv = ['--harmony_proxies', '--stack-size=64'];
+  var execArgv = ['--harmony_proxies', '--stack-size=256'];
   var args = [__filename, 'child', 'arg0'];
   var child = spawn(process.execPath, execArgv.concat(args));
   var out = '';