Update Makefile for common DNX targets
Update Makefile for common DNX targets

This Makefile should probably go away, but I gave it a quick update to
so that there's a familiar interface.

PaulHigin/PowerShell,bingbing8/PowerShell,daxian-dbw/PowerShell,bmanikm/PowerShell,jsoref/PowerShell,jsoref/PowerShell,KarolKaczmarek/PowerShell,daxian-dbw/PowerShell,jsoref/PowerShell,TravisEz13/PowerShell,TravisEz13/PowerShell,bingbing8/PowerShell,JamesWTruher/PowerShell-1,TravisEz13/PowerShell,JamesWTruher/PowerShell-1,daxian-dbw/PowerShell,bmanikm/PowerShell,PaulHigin/PowerShell,KarolKaczmarek/PowerShell,bingbing8/PowerShell,kmosher/PowerShell,JamesWTruher/PowerShell-1,PaulHigin/PowerShell,kmosher/PowerShell,KarolKaczmarek/PowerShell,TravisEz13/PowerShell,jsoref/PowerShell,kmosher/PowerShell,JamesWTruher/PowerShell-1,KarolKaczmarek/PowerShell,bmanikm/PowerShell,KarolKaczmarek/PowerShell,kmosher/PowerShell,PaulHigin/PowerShell,kmosher/PowerShell,bingbing8/PowerShell,bmanikm/PowerShell,jsoref/PowerShell,daxian-dbw/PowerShell,bingbing8/PowerShell,bmanikm/PowerShell