util: strToDPID() accepts other DPID format
util: strToDPID() accepts other DPID format

Formerly, this function only took the POX "canonical" format,
where the bottom 48 and top 16 bits are separated (and the
latter are optional).  It now accepts it when all 64 bits
are specified as 01-02-03-04-05-06-07-08, as well as if
accepting hex strings prefaced with 0x.

xAKLx/pox,andiwundsam/_of_normalize,waltznetworks/pox,denovogroup/pox,MurphyMc/pox,chenyuntc/pox,pthien92/sdn,jacobq/csci5221-viro-project,MurphyMc/pox,kavitshah8/SDNDeveloper,MurphyMc/pox,carlye566/IoT-POX,adusia/pox,pthien92/sdn,kpengboy/pox-exercise,kavitshah8/SDNDeveloper,denovogroup/pox,chenyuntc/pox,adusia/pox,PrincetonUniversity/pox,denovogroup/pox,diogommartins/pox,VamsikrishnaNallabothu/pox,jacobq/csci5221-viro-project,kpengboy/pox-exercise,MurphyMc/pox,carlye566/IoT-POX,carlye566/IoT-POX,xAKLx/pox,diogommartins/pox,waltznetworks/pox,kulawczukmarcin/mypox,andiwundsam/_of_normalize,waltznetworks/pox,pthien92/sdn,chenyuntc/pox,xAKLx/pox,denovogroup/pox,PrincetonUniversity/pox,noxrepo/pox,kpengboy/pox-exercise,carlye566/IoT-POX,diogommartins/pox,xAKLx/pox,MurphyMc/pox,jacobq/csci5221-viro-project,denovogroup/pox,adusia/pox,kulawczukmarcin/mypox,kavitshah8/SDNDeveloper,waltznetworks/pox,PrincetonUniversity/pox,VamsikrishnaNallabothu/pox,diogommartins/pox,pthien92/sdn,noxrepo/pox,pthien92/sdn,adusia/pox,andiwundsam/_of_normalize,andiwundsam/_of_normalize,kulawczukmarcin/mypox,jacobq/csci5221-viro-project,PrincetonUniversity/pox,kavitshah8/SDNDeveloper,kulawczukmarcin/mypox,kulawczukmarcin/mypox,xAKLx/pox,adusia/pox,diogommartins/pox,kpengboy/pox-exercise,VamsikrishnaNallabothu/pox,PrincetonUniversity/pox,chenyuntc/pox,kpengboy/pox-exercise,chenyuntc/pox,VamsikrishnaNallabothu/pox,waltznetworks/pox,VamsikrishnaNallabothu/pox,carlye566/IoT-POX,jacobq/csci5221-viro-project,noxrepo/pox,noxrepo/pox