Update the SubstitutionFilter.java class in order to allow regexp on
the subst filters by using the operator "~>"  to state the first
argument is a regexp. The default behavior is maintained if no operator
(i.e. remove string) or "=>" is used

Example:
    highway=* & name ~ '[Aa]venida [Dd]e [Ee]l .*' {
	    add streettype:movedend='${name|subst:[Aa]venida [Dd]e [Ee]l ~>}'
    }

- Enrico Liboni

git-svn-id: http://svn.mkgmap.org.uk/mkgmap/trunk@2664 25d90789-57f7-4ee0-8453-03a3dfeeeb22