By checking if dot is installed from the toplevel of a loadable module, code that use the module will get a warning about dot not being installed, even if the user code has nothing to do with graph generation (e.g., salmonella-feeds). While at it, turn `dot-installed?' into a procedure.
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|salmonella-html-report-cmd.scm||Don't print warning about dot not being installed from the toplevel|
|salmonella-html-report.meta||Depend on salmonella 2.8, for status-zero?|
|salmonella-html-report.release-info||Version bump to 1.6|
|salmonella-html-report.scm||Don't print warning about dot not being installed from the toplevel|
|salmonella-html-report.setup||Bump version to 1.7|