Fix bash login when ${CMDER_ROOT} has spaces.
Fix bash login when ${CMDER_ROOT} has spaces.

E.g., if ${CMDER_ROOT} is /c/Users/Foo Bar/cmder,
the following errors will occur:
  bash: pushd: /c/Users/Foo: No such file or directory
  bash: [: /c/Users/Foo: binary operator expected
  bash: /c/Users/Foo: No such file or directory

cmderdev/cmder,cmderdev/cmder