server-tools/instance-manager/buffer.h:
  fix for the valgring error
server-tools/instance-manager/commands.cc:
  sent the version string
server-tools/instance-manager/instance_options.cc:
  compute and store the version string
server-tools/instance-manager/instance_options.h:
  add a version string option, and added caching of the mysqld_path length
server-tools/instance-manager/options.cc:
  fix valgrind error
server-tools/instance-manager/parse_output.cc:
  Add an option to parse_output_and_get_value in order to be
  able to get the rest of the string after the found word in
  the output of popen() (E.g. a version string).
server-tools/instance-manager/parse_output.h:
  prototype changed