Some make check test fail on Alpine Linux

[kulnor]

I built the stable/7 branch in an Alpine Linux docker container after applying the patch described in issue #570. All looks overall fine but I see 8 / 8935 tests fail when I run make check (see below).
This seems minor but anything I should be concerned about. Note that the patch documented in #570 does not seem to be in the current develop/7 branch.
thanks!

=====================================================================
=  Checking log files \*.output for statistics:
=
=  Total number of tests PASSED  : 8935
=  Total number of tests FAILED  : 8
=  Total number of tests ABORTED : 0
=====================================================================

*** Not all tests completed successfully
*** Check the file release.output for more information

=====================================================================
=  COMPLETED test
=  Wed Jun 27 02:03:11 UTC 2018
=====================================================================


=====================================================================
=  WARNING: Some tests failed. See *.output in test directories under  /virtuoso-opensource/binsrc/tests/suite
=  Some aborted tests:
=  Some failed tests:
./thttp.ro/thttp.output:***FAILED: http/_virtrdf_log1.ttl does not contains virtrdf: string, but it should (old IRI syntax)
./thttp.ro/thttp.output:***FAILED: http/_virtrdf_log1.ttl does not contains virtrdf: string, but it should (new IRI syntax)
./thttp.ro/thttp.output:***FAILED: http/graphcrud_1.log does not contains 404 error for missing graph, but it should
./thttp.ro/thttp.output:***FAILED: http/graphcrud_2.log does not contain 201 for newly created graph, but it should
./thttp.ro/thttp.output:***FAILED: http/_virtrdf_log2.ttl does not contains virtrdf: string, but it should
=====================================================================
make[5]: *** [Makefile:857: check-local] Error 3
make[5]: Leaving directory '/virtuoso-opensource/binsrc/tests/suite'
make[4]: *** [Makefile:736: check-am] Error 2
make[4]: Leaving directory '/virtuoso-opensource/binsrc/tests/suite'
make[3]: *** [Makefile:587: check-recursive] Error 1
make[3]: Leaving directory '/virtuoso-opensource/binsrc/tests/suite'
make[2]: *** [Makefile:1337: check-recursive] Error 1
make[2]: Leaving directory '/virtuoso-opensource/binsrc/tests'
make[1]: *** [Makefile:471: check-recursive] Error 1
make[1]: Leaving directory '/virtuoso-opensource/binsrc'
make: *** [Makefile:631: check-recursive] Error 1

[pkleef]

These tests are minor and are known to fail at times without having an impact on the overall stability of your build.

[pkleef]

Note that the patch described in #570 has been committed to develop/7 branch and will be part of the upcoming new stable release.

[kulnor]

Thank you for checking on this and the feedback. Much appreciated.