CPCD API printed strings with unconstrained size into a single line calling
BufferedSockOutputStream::println. ATRT would receive messages from CPCD containing
these strings and would call a Parser using a buffer with a fixed size of 512 Bytes.
This Parser expects that a single line is totally contained within the buffer.
If a line with size greater than the Parser buffer size is sent from CPCP to ATRT
the Parser would  return a NULL value# This is the 2nd commit message:

Split CPCD long strings with size exceeding the Parser buffer size in smaller substrings.
Starting from the second substring, each substring has the format "+KEY: VALUE",
since the Parser appends the value of an existing property if KEY has "+" prefix.

Change autotest-run.sh version to 1.14.