Log message:
print: Replace RMD160 checksums with BLAKE2s checksums

All checksums have been double-checked against existing RMD160 and
SHA512 hashes

Log message:
print: Remove SHA1 hashes for distfiles

Log message:
Update pmw to 4.51

Many changes, including:

. Implemented &&& continuation lines, mainly for new replicator (see \ 
next).

. Implemented &* replication feature.

. Added escapes \<< and \>> for double typographic quotes.

. Implemented bracketed noteheads facility.

. Implemented key N.

. Transposition values of multiples of 11 or 12 caused PMW to give up with a
  hard internal error for some note values.

. A maximum (accumulated) transposition value of 60 is now implemented. This
  is 5 octaves, which should be enough for anybody.

. Added \nh\ and \nc\ so that individual notes can have noteheads set as
  harmonic or cross. This makes it possible to have chords containing
  different noteheads.

. Added /cx, /llc, /lrc, /rlc, and /rrc to slurs and lines to allow for
  horizontal positioning by musical offset a la MusicXML.

. Added Unicode support for non-standardly encoded PostScript fonts via .utr
  files.

. Added new "rest" letter T, the crotchet version giving a single \ 
slash beat
  indicator and the whole bar rest version giving a "percent" \ 
repetition sign.

Log message:
Update pmw to 4.30

Version 4.30 15-June-2018
-------------------------

1. If a "movement" was coded without any staves (for example, for a title
   page), there was the possibility of a segmentation crash due to memory
   corruption. This is a very old bug, surprisingly never triggered before.

2. Added the "tripletize" feature, somewhat of an experiment.

3. Allow semicolon and comma after any note, not just quavers and shorter, to
   make life easier when halvenotes and doublenotes are being used.

4. Implement [doublenotes] and [halvenotes] to alter note lengths without
   affecting time signatures.

5. Make -norepeat a synonym of -norepeats because I keep forgetting.

6. Make "stafflines" a synonym of "stavelines" because \ 
staff/stave are supposed
   to be interchangeable throughout.

7. Added an optional thickness to -drawstavelines.

8. Repeats in the middle of bars are now honoured in MIDI output.

9. If there were more than 20 text strings preceding a note, PMW could crash.
   The limit has been increased to 50, and a test for overflow is now in place.

10. Arrange to free heap memory so tests can run with -fsanitize=address.

11. If a chord was repeated multiple times by 'x' followed by a number greater
    than 1, a data overrun could occur. There is now also a hard error if there
    are too many notes in a chord (the limit is now 16).

12. If a midichannel directive contained a volume setting, undefined memory was
    being copied accidentally (but never used).

13. Several code refactorizations to tidy up suspect code picked up by gcc and
    clang sanitizers.

14. "Printtime" and "printkey" directives used to apply to \ 
the entire piece;
    even if set in the second movement they would affect the first. Now they
    apply only to the movement they are set in and any that follow.

15. Some other changes for "printkey":

    (a) At a mid-stave change of key, PMW used to check for C major or A minor
    when deciding whether to automatically insert a previous key cancellation
    signature using natural signs, though in one case the test for A minor was
    missing. Now it checks for a key signature of zero width, which means that
    if "printkey" defines an empty string for the new key, a cancellation
    signature will be generated.

    (b) Previously, a cancellation signature took no notice of any \ 
"printkey"
    setting. There is now an optional second argument for "printkey" that
    specifies what to print for a cancellation. If not supplied, an empty
    string is used.

16. Added four new characters to the music font: reverse turns and half circles.

17. Characters from the PMW-Alpha font were not being correctly included in the
    documentation PDF (something changed and I didn't notice). This has been
    fixed by including the type 3 PostScript font explicitly when building the
    PDF from SDoP's PostScript output.

Log message:
Update pmw to 4.29

Version 4.29 26-June-2016
-------------------------

1. Added -norc to the scripts for running tests to ensure that the user's
   .pmwrc file, if it exists, is ignored.

2. Running with a lot more compiler warnings turned on threw up a number of
   infelicities in the code. Refactoring has got rid of the compiler warnings.

3. Compiling with clang threw up a few that gcc missed; it also found a genuine
   bug, a misplaced ) in an expression. By pure fluke there appeared to be no
   way of provoking misbehaviour, because what was being checked was re-checked
   (correctly) later.

4. Allow ! as a modifier to notes as well as rests.

Log message:
Update location

Log message:
Use PKGMANDIR.

Log message:
Add SHA512 digests for distfiles for print category

Problems found locating distfiles:
	Package acroread7: missing distfile AdobeReader_enu-7.0.9-1.i386.tar.gz
	Package acroread8: missing distfile AdobeReader_enu-8.1.7-1.sparc.tar.gz
	Package cups-filters: missing distfile cups-filters-1.1.0.tar.xz
	Package dvidvi: missing distfile dvidvi-1.0.tar.gz
	Package lgrind: missing distfile lgrind.tar.bz2

Otherwise, existing SHA1 digests verified and found to be the same on
the machine holding the existing distfiles (morden).  All existing
SHA1 digests retained for now as an audit trail.