Fix line-ending styles on a few windows scripts

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@23448 57a11ea4-9604-0410-9ed3-97b8803252fd
Fix price quotes installation on Windows

The default perl version was too old for DateManip's dependencies
A couple of cosmetic tweaks

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@23449 57a11ea4-9604-0410-9ed3-97b8803252fd