added new command depclosure; added header and argv to what Charles had emailed

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/cran2deb@260 edb9625f-4e0d-4859-8d74-9fd3b1da38cb

diff --git a/trunk/exec/depclosure b/trunk/exec/depclosure
new file mode 100755 (executable)
index 0000000..4ce117f
--- /dev/null
+++ b/trunk/exec/depclosure
@@ -0,0 +1,6 @@
+#!/usr/bin/r
+## DOC: cran2deb depclosure package1 [package2 ...]
+## DOC:     show the dependency closure for <package1> ...
+## DOC:
+suppressMessages(library(cran2deb))
+print(do.call(rbind, r_dependency_closure(argv,forward_arcs=F)))