Removed redundant error messages in Main (after catching thrown errors).
Removed redundant error messages in Main (after catching thrown errors).

Compiler used to report the first typechecker or parser error in stderr
after it had already been reported.

Question for the future: Should all compiler errors be printed on
stderr?  That's what gcc appears to do.
bwittman/shadow,bwittman/shadow,TeamShadow/shadow,Brinsky/shadow,TeamShadow/shadow