Force UNC style to support win long paths

[chrisroberts]

Formats path usage to force UNC style paths on windows to support long paths. Should hopefully also fix #88.

/cc @webframp

[webframp]

Hah, ran into the problem from #93

Batali]: Readying installation destination... complete!
[Batali]: Installing cookbooks... error!
[ERROR]: Reason - git "--git-dir=C:/Users/sescriva/.batali/cache/git/Z2l0QGFwcHNnaXQuYmV0aGVsLmp3Lm9yZzpjaGVmL2Nvb2tib29rLWFwcHNlcnZlci5naXQ=/.git" "--work-tree=C:/Users/sescriva/.batali/cache/git/Z2l0QGFwcHNnaXQuYmV0aGVsLmp3Lm9yZzpjaGVmL2Nvb2tib29rLWFwcHNlcnZlci5naXQ=" pull "origin" "master"  2>&1:error: cannot pull with rebase: You have unstaged changes.
error: additionally, your index contains uncommitted changes.
error: please commit or stash them.
ERROR: Git::GitExecuteError: git "--git-dir=C:/Users/sescriva/.batali/cache/git/Z2l0QGFwcHNnaXQuYmV0aGVsLmp3Lm9yZzpjaGVmL2Nvb2tib29rLWFwcHNlcnZlci5naXQ=/.git" "--work-tree=C:/Users/sescriva/.batali/cache/git/Z2l0QGFwcHNnaXQuYmV0aGVsLmp3Lm9yZzpjaGVmL2Nvb2tib29rLWFwcHNlcnZlci5naXQ=" pull "origin" "master"  2>&1:error: cannot pull with rebase: You have unstaged changes.
error: additionally, your index contains uncommitted changes.
error: please commit or stash them.

scrubbed the cache

C:\src\chef\infra-repo [batali-test +3 ~2 -0 !]> batali cache -s
[Batali]: Remove all contents from local cache (C:/Users/sescriva/.batali/cache) (Y/N): y
[Batali]: Scrubbing local cache... complete!
Batali cache information:
  Path: C:/Users/sescriva/.batali/cache
  Size: 0.00M

and hit this:

[Batali]: Installing cookbooks... error!
[ERROR]: Reason - No such file or directory @ rb_sysopen - C:/Users/sescriva/.batali/cache/site/remote_site/aHR0cHM6Ly9zdXBlcm1hcmtldC5jaGVmLmlvOjQ0My9hcGkvdjEvY29va2Jvb2tzL2NvbXBhdF9yZXNvdXJjZS92ZXJzaW9ucy8xMi4xNi4zL2Rvd25sb2Fk/compat_resource/files/lib/chef_compat/monkeypatches/chef/resource_collection/resource_list.rb
ERROR: Errno::ENOENT: No such file or directory @ rb_sysopen - C:/Users/sescriva/.batali/cache/site/remote_site/aHR0cHM6Ly9zdXBlcm1hcmtldC5jaGVmLmlvOjQ0My9hcGkvdjEvY29va2Jvb2tzL2NvbXBhdF9yZXNvdXJjZS92ZXJzaW9ucy8xMi4xNi4zL2Rvd25sb2Fk/compat_resource/files/lib/chef_compat/monkeypatches/chef/resource_collection/resource_list.rb

[webframp]

Found some binaries that were committed to a couple repos listed in the Batali file that were causing the problem in #93 your index contains uncommitted changes. I cleaned those up by rewriting history to purge the files.

Still seem to be getting stuck at this one:

[Batali]: Readying installation destination... complete!
[Batali]: Installing cookbooks... error!
[ERROR]: Reason - No such file or directory @ rb_sysopen - C:/Users/sescriva/.batali/cache/site/remote_site/aHR0cHM6Ly9zdXBlcm1hcmtldC5jaGVmLmlvOjQ0My9hcGkvdjEvY29va2Jvb2tzL2NvbXBhdF9yZXNvdXJjZS92ZXJzaW9ucy8xMi4xOS4wL2Rvd25sb2Fk/compat_resource/files/lib/chef_compat/monkeypatches/chef/resource_collection/resource_list.rb
ERROR: Errno::ENOENT: No such file or directory @ rb_sysopen - C:/Users/sescriva/.batali/cache/site/remote_site/aHR0cHM6Ly9zdXBlcm1hcmtldC5jaGVmLmlvOjQ0My9hcGkvdjEvY29va2Jvb2tzL2NvbXBhdF9yZXNvdXJjZS92ZXJzaW9ucy8xMi4xOS4wL2Rvd25sb2Fk/compat_resource/files/lib/chef_compat/monkeypatches/chef/resource_collection/resource_list.rb

/cc @chrisroberts