TS-2036: register plugin callbacks at startup also switch from #ifndef to #ifdef to reduce confusion that probably gave rise to the bug in the first place.
TS-2036: register plugin callbacks at startup
also switch from #ifndef to #ifdef to reduce confusion that probably
gave rise to the bug in the first place.

taoyunxing/trafficserver,reveller/trafficserver,chitianhao/trafficserver,dyrock/trafficserver,davidbz/trafficserver,taoyunxing/trafficserver,chenglongwei/trafficserver,clearswift/trafficserver,bryancall/trafficserver,chitianhao/trafficserver,rahmalik/trafficserver,dyrock/trafficserver,SolidWallOfCode/trafficserver,rpufky/trafficserver,pbchou/trafficserver,reveller/trafficserver,rpufky/trafficserver,chitianhao/trafficserver,SolidWallOfCode/trafficserver,chitianhao/trafficserver,vmamidi/trafficserver,pbchou/trafficserver,davidbz/trafficserver,reveller/trafficserver,chenglongwei/trafficserver,rpufky/trafficserver,taoyunxing/trafficserver,davidbz/trafficserver,davidbz/trafficserver,clearswift/trafficserver,clearswift/trafficserver,rpufky/trafficserver,PSUdaemon/trafficserver,rpufky/trafficserver,vmamidi/trafficserver,taoyunxing/trafficserver,persiaAziz/trafficserver,reveller/trafficserver,rpufky/trafficserver,vmamidi/trafficserver,clearswift/trafficserver,persiaAziz/trafficserver,vmamidi/trafficserver,rahmalik/trafficserver,chenglongwei/trafficserver,duke8253/trafficserver,chenglongwei/trafficserver,reveller/trafficserver,pbchou/trafficserver,taoyunxing/trafficserver,taoyunxing/trafficserver,PSUdaemon/trafficserver,taoyunxing/trafficserver,SolidWallOfCode/trafficserver,rahmalik/trafficserver,PSUdaemon/trafficserver,dyrock/trafficserver,persiaAziz/trafficserver,rahmalik/trafficserver,vmamidi/trafficserver,bryancall/trafficserver,PSUdaemon/trafficserver,chenglongwei/trafficserver,rahmalik/trafficserver,reveller/trafficserver,duke8253/trafficserver,bryancall/trafficserver,dyrock/trafficserver,clearswift/trafficserver,rahmalik/trafficserver,duke8253/trafficserver,chenglongwei/trafficserver,duke8253/trafficserver,davidbz/trafficserver,clearswift/trafficserver,PSUdaemon/trafficserver,taoyunxing/trafficserver,persiaAziz/trafficserver,dyrock/trafficserver,pbchou/trafficserver,pbchou/trafficserver,SolidWallOfCode/trafficserver,clearswift/trafficserver,rpufky/trafficserver,taoyunxing/trafficserver,rahmalik/trafficserver,pbchou/trafficserver,duke8253/trafficserver,bryancall/trafficserver,duke8253/trafficserver,clearswift/trafficserver,rahmalik/trafficserver,vmamidi/trafficserver,bryancall/trafficserver,persiaAziz/trafficserver,SolidWallOfCode/trafficserver,rpufky/trafficserver,bryancall/trafficserver,dyrock/trafficserver,PSUdaemon/trafficserver,duke8253/trafficserver,chitianhao/trafficserver,chenglongwei/trafficserver,reveller/trafficserver,persiaAziz/trafficserver,rahmalik/trafficserver,reveller/trafficserver,persiaAziz/trafficserver,clearswift/trafficserver,chitianhao/trafficserver,SolidWallOfCode/trafficserver,PSUdaemon/trafficserver,SolidWallOfCode/trafficserver,rpufky/trafficserver,reveller/trafficserver,PSUdaemon/trafficserver,davidbz/trafficserver,chitianhao/trafficserver,PSUdaemon/trafficserver,dyrock/trafficserver,persiaAziz/trafficserver,chenglongwei/trafficserver