web: Support for arbitrary request handlers
web: Support for arbitrary request handlers

* Provide wrapRequestHandler() that attempts to make any HTTPRequestHandler
  subclass work with the POX web server.
* Removed old, complex, not-quite-finished solution to above problem.  In
  theory it was the beginning of a more general solution, but the new one
  is very simple, should work at least sometimes, and is done. :)
* Moved actual do_XXXX execution into SplitRequestHandler so that it can
  be overridden.

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