*) Clarified the specific MIME information (MimeType key) that would
warrant the inclusion of sysutils/desktop-file-utils/desktopdb.mk, as there
are other MIME-related keys that appear in *.desktop files.

*) Synthesize recent discussion about DIST_SUBDIR on pkgsrc-bugs@ into the
guide, as this is important, no one did it, and I have time to do it now.
Break that very large paragraph into four smaller, sensible ones.
regen
pkglint-4.129

* explain when desktop-file-utils is required.
* error missing {hicolor,gnome}-icon-theme.
Updated pkgtools/pkglint to 4.129
apply same patch as gst-plugin0.10-base to fix build on i386 without SSE/SSE2
support.
Use NEWLIBVER in SITES.

If you want to use user-defined NEWLIBVER in left side,
you must define it before its reference.
Thank you, obache@.