The Add Morphism command is now able to detect in advance:  1) if the proposed morphism named has already been used  2) if the proposed signature matches the function type
The Add Morphism command is now able to detect in advance:
 1) if the proposed morphism named has already been used
 2) if the proposed signature matches the function type


git-svn-id: a49b465eaba45b67e2e1e4e0b2c256a71f59fecb@6158 85f007b7-540e-0410-9357-904b9bb8a0f7

SamB/coq