Fix redisInfo on windows server - multiple colons in info string

Hi this is a change for redisInfo to work on windows; on windows it's possible (likely) that the configuration file part of the info looks like this:

config_file:C:\\Redis/redis.windows.conf\r\n

when this happens, strsplit splits this into 3 and ultimately leads to an error like:

Error in names(z) <- w[o] :
  'names' attribute [70] must be the same length as the vector [69]