### Please describe the problem.

git-annex build on Windows does not complete when user name has a space in it

### What steps will reproduce the problem?

Build git-annex from scratch as described on the Windows page of the guide when running as user Joe Blogs


### What version of git-annex are you using? On what operating system?

Windows 7 Prof, Cygwin install on 28/5/2014

### Please provide any additional information below.

The problem arises in escapeDosPaths of EvilLinker: windows usernames can have spaces in them which also need escaping

[[!tag confirmed]]
