adds the the case VernacShow(ShowMatch _) in the pattern-matching construct, but only maps to an error message.  Avoid warnings about unused variables.
adds the the case VernacShow(ShowMatch _) in the pattern-matching construct,
but only maps to an error message.  Avoid warnings about unused variables.


git-svn-id: a49b465eaba45b67e2e1e4e0b2c256a71f59fecb@7561 85f007b7-540e-0410-9357-904b9bb8a0f7

SamB/coq