8564 developer/build/onbld shouldn't require ghostscript
Reviewed by: Alexander Pyhalov <apyhalov@gmail.com>

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  #
  # CDDL HEADER END
  #
  #
  # Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
+ #
+ # Copyright 2019 Joyent, Inc.
+ #
  
  
  This directory contains the tools used to do a full build of the
  OS/Net workspace.  They usually live in the /opt/onbld directory on build
  machines. From here, 'make install' will build and install the tools
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          the -o option to simplify the output for diffing with previous
          build results.  It also uses the -i option to obtain NEEDED and RUNPATH
          entries, which help detect changes in software dependencies and makes
          sure objects don't have any strange runpaths like /opt/SUNWspro/lib.
  
- codereview
-         Given two filenames, creates a postscript file with the file 
-         differences highlighted.
- 
  codesign
          Tools for signing cryptographic modules using the official
          Sun release keys stored on a remote signing server. This
          directory contains signit, a client program for signing
          files with the signing server; signproto, a shell script
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