Since input manager throws an exception when trying to delete non-existent mappings, and since I'm loathe to change this behavior even though I kind of don't agree with it... instead, I've added a hasMapping() method so that callers can avoid deleting non-existant mappings without having to do all of their own book-keeping.
Since input manager throws an exception when trying
to delete non-existent mappings, and since I'm loathe
to change this behavior even though I kind of don't
agree with it...
instead, I've added a hasMapping() method so that
callers can avoid deleting non-existant mappings
without having to do all of their own book-keeping.


git-svn-id: f9411aee4f13664f2fc428a5b3e824fe43a079a3@9164 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

amit2103/jmonkeyengine,sandervdo/jmonkeyengine,shurun19851206/jMonkeyEngine,delftsre/jmonkeyengine,InShadow/jmonkeyengine,g-rocket/jmonkeyengine,tr0k/jmonkeyengine,zzuegg/jmonkeyengine,yetanotherindie/jMonkey-Engine,d235j/jmonkeyengine,g-rocket/jmonkeyengine,delftsre/jmonkeyengine,GreenCubes/jmonkeyengine,OpenGrabeso/jmonkeyengine,weilichuang/jmonkeyengine,jMonkeyEngine/jmonkeyengine,mbenson/jmonkeyengine,skapi1992/jmonkeyengine,bertleft/jmonkeyengine,OpenGrabeso/jmonkeyengine,phr00t/jmonkeyengine,InShadow/jmonkeyengine,skapi1992/jmonkeyengine,davidB/jmonkeyengine,zzuegg/jmonkeyengine,InShadow/jmonkeyengine,nickschot/jmonkeyengine,skapi1992/jmonkeyengine,OpenGrabeso/jmonkeyengine,davidB/jmonkeyengine,d235j/jmonkeyengine,atomixnmc/jmonkeyengine,wrvangeest/jmonkeyengine,sandervdo/jmonkeyengine,jMonkeyEngine/jmonkeyengine,tr0k/jmonkeyengine,yetanotherindie/jMonkey-Engine,phr00t/jmonkeyengine,danteinforno/jmonkeyengine,olafmaas/jmonkeyengine,amit2103/jmonkeyengine,mbenson/jmonkeyengine,bertleft/jmonkeyengine,danteinforno/jmonkeyengine,OpenGrabeso/jmonkeyengine,mbenson/jmonkeyengine,amit2103/jmonkeyengine,jMonkeyEngine/jmonkeyengine,aaronang/jmonkeyengine,danteinforno/jmonkeyengine,olafmaas/jmonkeyengine,atomixnmc/jmonkeyengine,danteinforno/jmonkeyengine,delftsre/jmonkeyengine,tr0k/jmonkeyengine,g-rocket/jmonkeyengine,mbenson/jmonkeyengine,amit2103/jmonkeyengine,shurun19851206/jMonkeyEngine,weilichuang/jmonkeyengine,shurun19851206/jMonkeyEngine,mbenson/jmonkeyengine,wrvangeest/jmonkeyengine,rbottema/jmonkeyengine,yetanotherindie/jMonkey-Engine,yetanotherindie/jMonkey-Engine,rbottema/jmonkeyengine,bsmr-java/jmonkeyengine,g-rocket/jmonkeyengine,sandervdo/jmonkeyengine,atomixnmc/jmonkeyengine,bertleft/jmonkeyengine,Georgeto/jmonkeyengine,shurun19851206/jMonkeyEngine,OpenGrabeso/jmonkeyengine,weilichuang/jmonkeyengine,weilichuang/jmonkeyengine,aaronang/jmonkeyengine,olafmaas/jmonkeyengine,GreenCubes/jmonkeyengine,d235j/jmonkeyengine,danteinforno/jmonkeyengine,davidB/jmonkeyengine,zzuegg/jmonkeyengine,rbottema/jmonkeyengine,mbenson/jmonkeyengine,phr00t/jmonkeyengine,shurun19851206/jMonkeyEngine,bsmr-java/jmonkeyengine,zzuegg/jmonkeyengine,nickschot/jmonkeyengine,bsmr-java/jmonkeyengine,wrvangeest/jmonkeyengine,atomixnmc/jmonkeyengine,aaronang/jmonkeyengine,OpenGrabeso/jmonkeyengine,skapi1992/jmonkeyengine,weilichuang/jmonkeyengine,yetanotherindie/jMonkey-Engine,g-rocket/jmonkeyengine,tr0k/jmonkeyengine,aaronang/jmonkeyengine,davidB/jmonkeyengine,davidB/jmonkeyengine,d235j/jmonkeyengine,Georgeto/jmonkeyengine,g-rocket/jmonkeyengine,weilichuang/jmonkeyengine,InShadow/jmonkeyengine,GreenCubes/jmonkeyengine,shurun19851206/jMonkeyEngine,nickschot/jmonkeyengine,bertleft/jmonkeyengine,sandervdo/jmonkeyengine,wrvangeest/jmonkeyengine,phr00t/jmonkeyengine,davidB/jmonkeyengine,bsmr-java/jmonkeyengine,delftsre/jmonkeyengine,Georgeto/jmonkeyengine,nickschot/jmonkeyengine,yetanotherindie/jMonkey-Engine,d235j/jmonkeyengine,olafmaas/jmonkeyengine,atomixnmc/jmonkeyengine,Georgeto/jmonkeyengine,Georgeto/jmonkeyengine,amit2103/jmonkeyengine,rbottema/jmonkeyengine,amit2103/jmonkeyengine,d235j/jmonkeyengine,danteinforno/jmonkeyengine,GreenCubes/jmonkeyengine,jMonkeyEngine/jmonkeyengine,Georgeto/jmonkeyengine,atomixnmc/jmonkeyengine