Solaris porting changes.

[l1gi]

Ticket: 7005

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Link to ticket: https://redmine.openinfosecfoundation.org/issues/7005

Describe changes:

• src/source-pcap-file-directory-helper.c, src/util-path.c: Solaris doesn't define d_type dirent member and DT_REG type.

• src/suricata.c: Fix alignment problems on SPARC. Based on similar fixes found at:
  https://lists.debian.org/debian-sparc/2012/01/msg00012.html
  and:
  https://www.winehq.org/pipermail/wine-patches/2011-February/098547.html.

• src/suricata.c: Only Linux and the BSDs support the RLIMIT_NPROC resource limit.

• src/util-syslog.c: Solaris syslog.h doesn't define LOG_FTP.

• src/util-time.c: Solaris tm doesn't define tm_gmtoff member.

• sun macro replacement with __sun. sun is not defined when C++ standard is used.

[github-actions]

NOTE: This PR may contain new authors.

[catenacyber]

Argh, I guess it will need a rebase to get green CI

[victorjulien]

I'd like to see this split out into different commits, not just a general "Solaris porting changes". Essentially the list of changes in the PR message body has the logical separation I think would be appropriate for the commits. Esp the alignment commit would need to have a bit more explanation of what it does and why.

[victorjulien]

Code itself looks good, git needs to a cleanup.

Also needs a rebase again.

[l1gi]

Hi Victor,

so could you help me and list what exact steps should I do to make all this pass? I have done the rebase twice without success. Did I something wrong, please?

Sorry, I am not keen on github development, but I still would like to make these change to get to the repo.

Regards,
m.