PETSC_FILE_* constants missing

[liu chang]

Dear all,

I am a new user of Petsc and have been struggling to install 2.3.1 on
my workstation. I noticed that in Petsc 2.3.1 I can no longer find the
definitions of constants PETSC_FILE_CREATE, PETSC_FILE_RDONLY, etc,
which were in petscviewer.h in version 2.3.0. I looked through the
changelog and found nothing relevant. What has happened to these
constants? Some exisiting code uses these constants and I can no
longer compile them. Any advice?

Thank you.

Liu