Copy CoreLib (and respective PDBs) to IL and NI folders (#30304)
Copy CoreLib (and respective PDBs) to IL and NI folders (#30304)

These are needed to workaround some OpenCover issues and to use IL rewrite tools.
ptoonen/corefx,mmitche/corefx,Jiayili1/corefx,ericstj/corefx,ViktorHofer/corefx,ViktorHofer/corefx,BrennanConroy/corefx,ViktorHofer/corefx,ericstj/corefx,mmitche/corefx,ericstj/corefx,ptoonen/corefx,shimingsg/corefx,ptoonen/corefx,ViktorHofer/corefx,mmitche/corefx,ViktorHofer/corefx,wtgodbe/corefx,mmitche/corefx,Jiayili1/corefx,ptoonen/corefx,shimingsg/corefx,BrennanConroy/corefx,mmitche/corefx,ptoonen/corefx,wtgodbe/corefx,shimingsg/corefx,mmitche/corefx,ViktorHofer/corefx,Jiayili1/corefx,ericstj/corefx,Jiayili1/corefx,ericstj/corefx,wtgodbe/corefx,shimingsg/corefx,wtgodbe/corefx,ericstj/corefx,shimingsg/corefx,BrennanConroy/corefx,Jiayili1/corefx,wtgodbe/corefx,ptoonen/corefx,Jiayili1/corefx,ViktorHofer/corefx,shimingsg/corefx,shimingsg/corefx,Jiayili1/corefx,wtgodbe/corefx,wtgodbe/corefx,ericstj/corefx,ptoonen/corefx,mmitche/corefx