[PATCH 07/15] KDB: clean up KDB grep code, add some options

This patch cleans up the grep 'pipe' code in KDB and adds some new options: * allows multiple '| grep' options to be used. * adds '-v' flag to invert the search. * adds '-o' flag for optional ('OR') patterns. * adds '-u' flag to delay printing until match found. Options may be

[PATCH 07/15] KDB: clean up KDB grep code, add some options

This patch cleans up the grep 'pipe' code in KDB and adds some new options: * allows multiple '| grep' options to be used. * adds '-v' flag to invert the search. * adds '-o' flag for optional ('OR') patterns. * adds '-u' flag to delay printing until match found. Options may be