Add basic support for SPARC64

[glaubitz]

Fixes #490

I have tested my patch against the Debian package and with the patch, kcov builds and passes all tests:

PYTHONPYCACHEPREFIX="/home/glaubitz/kcov-deb/kcov-43+dfsg/py-cache" PYTHONPATH="/home/glaubitz/kcov-deb/kcov-43+dfsg/tests/tools" \
        python3 -m libkcov /home/glaubitz/kcov-deb/kcov-43+dfsg/obj-sparc64-linux-gnu/src/kcov "/home/glaubitz/kcov-deb/kcov-43+dfsg/tests-temp" "/home/glaubitz/kcov-deb/kcov-43+dfsg/build-tests/" "." --no-ptrace -v
runTest (test_basic.lookup_binary_in_path.runTest) ... expected failure
runTest (test_basic.too_few_arguments.runTest) ... ok
runTest (test_basic.wrong_arguments.runTest) ... ok
runTest (test_bash_linux_only.bash_exit_before_child.runTest) ... ok
runTest (test_bash_linux_only.bash_ldpreload_multilib.runTest) ... ok
runTest (test_bash_linux_only.bash_sh_shebang.runTest) ... ok
runTest (test_bash.bash_accumulate_changed_data.runTest) ... skipped 'Only for x86'
runTest (test_bash.bash_accumulate_data.runTest) ... ok
runTest (test_bash.bash_can_find_non_executed_scripts.runTest) ... skipped 'Only for x86'
runTest (test_bash.bash_can_find_non_executed_scripts_manually.runTest) ... skipped 'Only for x86'
runTest (test_bash.bash_can_ignore_function_with_spaces.runTest) ... ok
runTest (test_bash.bash_can_ignore_non_executed_scripts.runTest) ... ok
runTest (test_bash.bash_coverage.runTest) ... ok
runTest (test_bash.bash_coverage_debug_trap.runTest) ... ok
runTest (test_bash.bash_coverage_tricky.runTest) ... ok
runTest (test_bash.bash_dollar_var_replacement.runTest) ... ok
runTest (test_bash.bash_done_eof.runTest) ... ok
runTest (test_bash.bash_drain_stdout_without_return.runTest) ... skipped 'Only for x86'
runTest (test_bash.bash_eof_backtick.runTest) ... ok
runTest (test_bash.bash_exit_status.runTest) ... ok
runTest (test_bash.bash_handle_all_output.runTest) ... ok
runTest (test_bash.bash_heredoc_backslashes.runTest) ... ok
runTest (test_bash.bash_heredoc_special_cases_issue_44.runTest) ... ok
runTest (test_bash.bash_honor_signal.runTest) ... ok
runTest (test_bash.bash_ignore_uncovered.runTest) ... ok
runTest (test_bash.bash_issue_116_arithmetic_and_heredoc_issue_117_comment_within_string.runTest) ... ok
runTest (test_bash.bash_merge_data_issue_38.runTest) ... ok
runTest (test_bash.bash_multiline_backslashes.runTest) ... ok
runTest (test_bash.bash_multiline_quotes.runTest) ... ok
runTest (test_bash.bash_no_executed_lines.runTest) ... ok
runTest (test_bash.bash_non_empty_braces.runTest) ... ok
runTest (test_bash.bash_short_file.runTest) ... ok
runTest (test_bash.bash_stderr_redirection.runTest) ... ok
runTest (test_bash.bash_subshell.runTest) ... ok
runTest (test_filter.include_exclude_pattern.runTest) ... ok
runTest (test_filter.include_path.runTest) ... ok
runTest (test_filter.include_path_and_exclude_pattern.runTest) ... ok

----------------------------------------------------------------------
Ran 37 tests in 9.177s

OK (skipped=4, expected failures=1)

CC @karcherm @thesamesam @koachan @andreas-gaisler

[SimonKagstrom]

Neat and nice! Haven't used SPARCs since the 1990s, via Solaris and NetBSD :-)

Care to update the readme as well, to add it to the supported architectures?

[glaubitz]

Neat and nice! Haven't used SPARCs since the 1990s, via Solaris and NetBSD :-)

Oracle actually still sells those and ESA sends them into space (SPARC Leon).

Care to update the readme as well, to add it to the supported architectures?

Sure. Second.

[glaubitz]

Do you mean the ChangeLog? I'm not seeing any mention of architecture support in README.md.

[SimonKagstrom]

You're right, I misremembered. Merged, thanks!