[pwtools] Use ewarn for usage advice.

Package-Manager: portage-2.1.11.31
Manifest-Sign-Key: C0174749
[actdiag] Use README.gentoo for installation notes.

Package-Manager: portage-2.1.11.31
Manifest-Sign-Key: C0174749
[nwdiag] Use README.gentoo for installation notes.

Package-Manager: portage-2.1.11.31
Manifest-Sign-Key: C0174749
[seqdiag] Use README.gentoo for installation notes.

Package-Manager: portage-2.1.11.31
Manifest-Sign-Key: C0174749
Merge branch 'feat/readme_gentoo'

* feat/readme_gentoo:
  [seqdiag] Use README.gentoo for installation notes.
  [nwdiag] Use README.gentoo for installation notes.
  [actdiag] Use README.gentoo for installation notes.

Conflicts:
	media-gfx/actdiag/ChangeLog
	media-gfx/nwdiag/ChangeLog
	media-gfx/nwdiag/nwdiag-0.9.2.ebuild
	media-gfx/nwdiag/nwdiag-0.9.4.ebuild
	media-gfx/seqdiag/ChangeLog
	media-gfx/seqdiag/seqdiag-0.8.1.ebuild
	metadata/md5-cache/media-gfx/actdiag-0.4.1
	metadata/md5-cache/media-gfx/nwdiag-0.9.2
	metadata/md5-cache/media-gfx/nwdiag-0.9.4
	metadata/md5-cache/media-gfx/seqdiag-0.8.1
Replace sphinxcontrib-issuetracker use with extlinks..

This is nowhere near as friendly as the issuetracker plugin, but what can we do?
Closes #738.
[Tr] Fixed minor reST syntax error.
[hubugs] 0.16.0 version bump.

Package-Manager: portage-2.1.11.31
Manifest-Sign-Key: C0174749
Merge branch 'feat/bumps'

* feat/bumps:
  [hubugs] 0.16.0 version bump.

Conflicts:
	app-misc/hubugs/ChangeLog
	support/stabilisation.rem