wip: moving the old building processes on pslm.rb
migration to pslm.rb: completory builds correctly
remove festal psalter

months ago included in the regular psalter
migration to pslm.rb: Sunday antiphonal builds
migration to pslm.rb: 'folk vespers' build
migration to pslm.rb: Triduum builds
migration to pslm.rb: psalm 136 builds
for a more readable 'rake -T'
migration to pslm.rb: fix Nativity
mistakenly (un)divided verse fixed
migration to pslm.rb: psalter compiles
upgrade psalm title pattern
fix wrong option (error preventing compilation)
strophe-end-mark command compatible with pslm.rb
delete psalmpreprocessor.rb

it has been now fully replaced by the 'pslm' gem for all tasks, both 'bare rakefile'
and typographus-driven.
The only known feature which still lacks in pslm is marking of short verses.
Some more will probably be found later, but I find it profitable to migrate now, despite of
pslm's immaturity.
Merge branch 'psalmpreprocessor-adieu'

Topic branch handling migration of psalm pointing tasks from psalmpreprocessor.rb to the pslm gem
psalm processing multithreaded