- Allow * and exceptions for -p in the headers and parameters lists:
--p *,-h1,-h2,-h3:p1,p2,p3
--p h1,h2,h3:*,-p1,-p2,-p3
--p *,-h1,-h2,-h3:*,-p1,-p2,-p3
+ Test --save-headers|body|message masks one after another to allow
+ saving a message or a subpart to more than one file.