Bug 627575 - Stylesheet names with non-alphanumeric characters and saved-reports -- addendum

Work around a bug in guile 1.8. It escapes spaces in symbols
when printed to a string, but can't convert that string
back properly in a symbol

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@23501 57a11ea4-9604-0410-9ed3-97b8803252fd