Better migration fixes for path.existsSync

[shama]

Take a look at this pull: https://github.com/cowboy/node-glob-whatev/pull/3/files Both changes are incorrect.

I think a better migration would be something a la var existsSync = fs.existsSync || path.existsSync; so it doesn't break code on 0.6. Thanks!

[shama]

Oh another note: it misses uses of require('path').existsSync too. :)
Reference: gruntjs/grunt-contrib#73 (btw, has been fixed earlier in the 0.2.0-wip branch of that repo)

[AndreasMadsen]

+1 just got 5 pull requests, there will break compatibility with node 0.6 and node 0.4.

[bithavoc]

+1

[blakmatrix]

I'm kinda sad because the state of the bot is relatively ephemeral, it takes only hours to run on npm repos on github (this time around 8672 and only affected 8% of the population(700) of those 60% were positive changes and 40% were not) however, when i package this into an example, I will attempt to address the require('fs') and backwards compat both ways.