Updated/edited doc/notes/util/OptionalParam
Editing doc/notes/util/OptionalParam
Modifying Util::Label to allow for optional labels.
Modifying Util::Begin to use a Label object. Add Label::clear().
Reversing commit of .ioUtil.h.swp
Adding *.swp to simpatico/.gitignore
Putting #ifdef INTER_BOND blocks in ddMd code.
Merge branch 'devel' into coulomb

Conflicts:
	configure