v2.6. ignores "algo: cryptonight-light" when "variant: 1" is specified
In my v.2.5 config files for Aeon and TRTL I had specified "algo: cryptonight-lite" at the top, and "variant: 1" in the pools section.   When I ran it with v2.6.2, it defaulted to cryptonight algorithm instead of cryptonight lite.  The fix was to change algo to "cn-lite:/1",  but ideally it would be backwards compatible.  Perhaps "variant: 1" in the pools section is overriding the algo: field inappropriately?
