be sensitive about std=c++11 flag
be sensitive about std=c++11 flag

not supported by gcc4.6 -> must use std=c++0x (=older compatibility)
but c++0x is unknown to clang --> do not directly add to the CMAKE_CXXFLAGS_BASE
variable, but let cmake be smart about it.

go-bears/nupic,numenta/nupic,glorizen/nupic,cogmission/nupic,BeiLuoShiMen/nupic,brev/nupic,brev/nupic,marionleborgne/nupic,chanceraine/nupic,badlogicmanpreet/nupic,lscheinkman/nupic,cngo-github/nupic,scottpurdy/nupic,pap/nupic,sambitgaan/nupic,passiweinberger/nupic,numenta-ci/nupic,allanino/nupic,arhik/nupic,vitaly-krugl/nupic,EricSB/nupic,ben-hopps/nupic,sambitgaan/nupic,rayNymous/nupic,cngo-github/nupic,BeiLuoShiMen/nupic,EricSB/nupic,badlogicmanpreet/nupic,wanghaven/nupic,scottpurdy/nupic,wanghaven/nupic,ywcui1990/nupic,SaganBolliger/nupic,chanceraine/nupic,BoltzmannBrain/nupic,alfonsokim/nupic,pap/nupic,rcrowder/nupic,rhyolight/nupic,vitaly-krugl/nupic,loretoparisi/nupic,chen0031/nupic,eranchetz/nupic,passiweinberger/nupic,elkingtonmcb/nupic,elkingtonmcb/nupic,marionleborgne/nupic,numenta/nupic,sambitgaan/nupic,elkingtonmcb/nupic,markneville/nupic,BeiLuoShiMen/nupic,allanino/nupic,breznak/nupic,cogmission/nupic,ben-hopps/nupic,breznak/nupic,BoltzmannBrain/nupic,virneo/nupic,akhilaananthram/nupic,blueburningcoder/nupic,alfonsokim/nupic,marionleborgne/nupic,fergalbyrne/nupic,runt18/nupic,glorizen/nupic,darshanthaker/nupic,mcanthony/nupic,blueburningcoder/nupic,neuroidss/nupic,pap/nupic,badlogicmanpreet/nupic,rhyolight/nupic,mcanthony/nupic,neuroidss/nupic,SaganBolliger/nupic,arhik/nupic,markneville/nupic,vamsirajendra/nupic,metaml/nupic,GeraldLoeffler/nupic,breznak/nupic,markneville/nupic,GeraldLoeffler/nupic,loretoparisi/nupic,brev/nupic,BoltzmannBrain/nupic,subutai/nupic,cogmission/nupic,virneo/nupic,pulinagrawal/nupic,go-bears/nupic,metaml/nupic,fergalbyrne/nupic,numenta/nupic,lscheinkman/nupic,runt18/nupic,pulinagrawal/nupic,rhyolight/nupic,akhilaananthram/nupic,go-bears/nupic,cngo-github/nupic,chanceraine/nupic,rcrowder/nupic,vamsirajendra/nupic,alfonsokim/nupic,jcasner/nupic,runt18/nupic,fergalbyrne/nupic,numenta-ci/nupic,subutai/nupic,rcrowder/nupic,eranchetz/nupic,vitaly-krugl/nupic,arhik/nupic,metaml/nupic,numenta-ci/nupic,ywcui1990/nupic,jcasner/nupic,jcasner/nupic,akhilaananthram/nupic,rayNymous/nupic,rayNymous/nupic,neuroidss/nupic,ywcui1990/nupic,wanghaven/nupic,loretoparisi/nupic,allanino/nupic,ben-hopps/nupic,mcanthony/nupic,glorizen/nupic,GeraldLoeffler/nupic,eranchetz/nupic,lscheinkman/nupic,darshanthaker/nupic,virneo/nupic,vamsirajendra/nupic,darshanthaker/nupic,pulinagrawal/nupic,blueburningcoder/nupic,scottpurdy/nupic,chen0031/nupic,subutai/nupic,SaganBolliger/nupic,chen0031/nupic,passiweinberger/nupic,EricSB/nupic