From `man bash`
The return status of a pipeline is the exit status of the last command, unless the pipefail option is enabled.  If pipefail is enabled, the
pipeline's return status is the value of the last (rightmost) command to exit with a non-zero status, or zero if all commands exit success‐
fully.

- Do not tail the check output as the test log is now written in
  test-suit.log files
- On failure display the whole content of every test-suite.log file found
  in the build directory and exit with 1

fix issue #220: implicit declaration of function ‘isatty’

Fixes warning:
converter-example.c: In function ‘main’:
converter-example.c:400:8: warning: implicit declaration of function ‘isatty’ [-Wimplicit-function-declaration]
     if(isatty(1)) {
        ^

Fixes check-src/check-135.-gen-OER.c and check-src/check64-136.-gen-OER.c

Free the internal buffers

This fix the following ubsan error
check-62.c:36:2: runtime error: null pointer passed as argument 2, which is declared to never be null

The asn_set_add calls realloc in some of the cases and the struct cannot
be freed correctly when the sub-structs are allocated on the stack