manually merged itfrombit's changes from master:
manually merged itfrombit's changes from master:

09c16c1b7e5e9d06aef4 Added aliasing support for quasiquote operators
41a2d6c22feafd4b9051 Surrounded calls to dumpContext with #ifdef

hodgeswt/nu,jqk6/nu,heiko-henrich/nutor,timburks/nu,timburks/nu,nulang/nu,heiko-henrich/nutor,heiko-henrich/nutor,spotify/nu,hodgeswt/nu,jqk6/nu,jqk6/nu,spotify/nu,timburks/nu,spotify/nu,jqk6/nu,gcbeyond/nu,heiko-henrich/nutor,spotify/nu,gcbeyond/nu,gcbeyond/nu,nulang/nu,gcbeyond/nu,nulang/nu,hodgeswt/nu,hodgeswt/nu