Edit to linalg.py PCA function to stop it changing data matrix.
Edit to linalg.py PCA function to stop it changing data matrix.

befelix/GPy,Dapid/GPy,gusmaogabriels/GPy,TianpeiLuke/GPy,jameshensman/GPy,ptonner/GPy,PredictiveScienceLab/GPy,buntyke/GPy,ysekky/GPy,fivejjs/GPy,beckdaniel/GPy,ptonner/GPy,esiivola/GPYgradients,ysekky/GPy,mikecroucher/GPy,beckdaniel/GPy,ptonner/GPy,maaskola/GPy,esiivola/GPYgradients,PredictiveScienceLab/GPy,AlexGrig/GPy,jameshensman/GPy,mikecroucher/GPy,AlexGrig/GPy,ysekky/GPy,mikecroucher/GPy,strongh/GPy,Dapid/GPy,ysekky/GPy,TianpeiLuke/GPy,buntyke/GPy,SheffieldML/GPy,Dapid/GPy,maaskola/GPy,maaskola/GPy,AlexGrig/GPy,AlexGrig/GPy,avehtari/GPy,PredictiveScienceLab/GPy,befelix/GPy,dhhjx880713/GPy,ptonner/GPy,SheffieldML/GPy,gusmaogabriels/GPy,avehtari/GPy,buntyke/GPy,befelix/GPy,jameshensman/GPy,strongh/GPy,jameshensman/GPy,maaskola/GPy,beckdaniel/GPy,SheffieldML/GPy,Dapid/GPy,fivejjs/GPy,TianpeiLuke/GPy,strongh/GPy,dhhjx880713/GPy,buntyke/GPy,PredictiveScienceLab/GPy,beckdaniel/GPy,dhhjx880713/GPy,esiivola/GPYgradients,gusmaogabriels/GPy,SheffieldML/GPy,dhhjx880713/GPy,esiivola/GPYgradients,befelix/GPy,mikecroucher/GPy,avehtari/GPy,fivejjs/GPy,avehtari/GPy