Restrict (try...with...) to avoid catching critical exn (part 8)

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16284 85f007b7-540e-0410-9357-904b9bb8a0f7
Restrict (try...with...) to avoid catching critical exn (part 9)

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16285 85f007b7-540e-0410-9357-904b9bb8a0f7
Restrict (try...with...) to avoid catching critical exn (part 10)

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16286 85f007b7-540e-0410-9357-904b9bb8a0f7
Restrict (try...with...) to avoid catching critical exn (part 11)

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16287 85f007b7-540e-0410-9357-904b9bb8a0f7
Restrict (try...with...) to avoid catching critical exn (part 12)

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16288 85f007b7-540e-0410-9357-904b9bb8a0f7
Restrict (try...with...) to avoid catching critical exn (part 12)

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16289 85f007b7-540e-0410-9357-904b9bb8a0f7
Restrict (try...with...) to avoid catching critical exn (part 13)

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16290 85f007b7-540e-0410-9357-904b9bb8a0f7
Restrict (try...with...) to avoid catching critical exn (part 14)

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16291 85f007b7-540e-0410-9357-904b9bb8a0f7
Restrict (try...with...) to avoid catching critical exn (part 15)

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16292 85f007b7-540e-0410-9357-904b9bb8a0f7
Vernac+Toplevel: get rid of DuringVernacInterp

 This meta-exception was already almost unused, just to distinguish
 exceptions during parsing or interp.

 Some code cleanup btw

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16293 85f007b7-540e-0410-9357-904b9bb8a0f7
Vernac+Toplevel: get rid of Error_in_file

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16294 85f007b7-540e-0410-9357-904b9bb8a0f7
Toplevel: improved comments

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16295 85f007b7-540e-0410-9357-904b9bb8a0f7