Modified r2p_imports to add dump of file name of defining file for any objects requested on command line.  This makes it easy to examine the source for Luddites who don't use IDEs.
Modified r2p_imports to add dump of file name of defining file
for any objects requested on command line.  This makes it easy
to examine the source for Luddites who don't use IDEs.

pombreda/rst2pdf,liuyi1112/rst2pdf,rst2pdf/rst2pdf,pombreda/rst2pdf,liuyi1112/rst2pdf,rst2pdf/rst2pdf