* Moved the error codes to jerry-port.h and declared port function
`jerry_port_fatal`.
* Moved "exit or abort on fail" functionality to the newly added
jerry-port-default-fatal.c.
* This implied that a default port-specific API had to be introduced:
functions `jerry_port_default_set_abort_on_fail` and
`jerry_port_default_is_abort_on_fail` declared in jerry-port-default.h
control the fatal exit behaviour.
* For the sake of clarity, renamed jerry-port.c to
jerry-port-default-io.c.
* Adapted CMakeLists to deal with port implementations consisting of
more then one source file and exposing headers. This also required
the renaming of `EXTERNAL_PORT_FILE` cmake option to
`EXTERNAL_PORT_DIR`.
* Adapted main sources to use the default port header for the
abort-on-fail functionality, as that is not part of the core jerry
API anymore.
* Added default port implementation to the static source code checker
tools.
JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu
