Doc
OK, back to using plain R connections but with some help to disable Nagle on them; Got rid of special unneccessary redisRawCmd function but still need to adapt all the redis commands to use the new approach
Added required Makevars.win file; modified most commands that return values to use the new ... raw=TRUE/FALSE scheme. This still needs doc and unit tests
Fixed some unit tests (still need more coverage); Completed transition to new raw= argument on most commands; updated version to 1.6.8 in preparation for release to CRAN
Updated NEWS and README