Comment 14 for bug 1709710

Here's a branch that looks at the to-be-escaped partial response string to see how much extra space the chunk will need, base on how many XML-ish characters are present, and scales the chunk size for that message appropriately:

http://git.evergreen-ils.org/?p=working/OpenSRF.git;a=shortlog;h=refs/heads/user/miker/lp-1709710-smarter-chunk-length