[mkgmap-dev] Patch to allow a style rule to consist of just a regular expression.

Hi During the conversation with Kay earlier I realised that it is easily possible to make rules with only complex expressions work. Currently a rule such as the following would give an error: tagname ~ 'blue.*' [ 0x1 ...] tagname < 10 [ 0x1 ...] They can be converted automatically to a form that will work eg: tagname=* & tagname~'blue.*' [ 0x1 ...] The attached patch does this. ..Steve