ChildProcess assertion prevents running native FileChooser

Hi Jules,


the new assertion in ChildProcess introduced with commit 1f27553d381a91725016dfe3799fd39dfc32824d prevents opening native file chooser and probably other processes which are called without full path and not in current directory. The process dies when calling 'which' and 'zenety' in FileChooser's exeIsAvailable function, because the resulting path in the assertion is wrong.

Drat! Thanks, should be ok now.