Check strdup availability
Add support for strdup-missing environments
Merge branch 'release-1.4' into hotfix-portable-strdup
Add definition _ALL_SOURCES for some platforms
Don't use -C option of make command, for the portability
Merge branch 'release-1.4' into hotfix-portable-test
Don't use shell-builtin '!'
Merge branch 'hotfix-portable-test' into release-1.4
Merge branch 'hotfix-portable-strdup' into release-1.4
Merge branch 'fix-for-passing-test-without-getopt_long' into release-1.4