get \leiningen-core\.lein-bootstrap paths properly in windows
else getting:
Error: Could not find or load main class clojure.main

this now allows compiling leiningen on windows successfuly
Handle folders with spaces in their names (under windows)
Show error message when parent folders(LEIN_ROOT) contain semicolon in
their names and require that .lein-bootstrap be recreated in this case.
Semicolon in files/folder names is not supported even though windows
allows such names.
Merge pull request #1159 from AtKaaZ/bootstrapPathsGet

get \leiningen-core\.lein-bootstrap paths properly in windows