Support multiple findReplace and findReplaceRegex parameters

This make is easier to support multiple find and replace requests avoiding older support requiring a comma separated list of colon separated values and the associated problems with delimiters and quoting. Each findReplace or findReplaceRegex parameter should be a colon separated find:replace pair. The colon delimiter can be replaced with a different delimiter using the special parameter (just like previous releases).

With this support, we are deprecating the older capability and may remove that at some future version. To use the older capability, one one findReplace and/or one findReplaceRegex parameter can be specified.