support for different sets of psalm texts

override the default by the setting item psalms-dir in the hiramfile
set psalms directory
fixed a string-mangling error I haven't quite understood
syllabify
tonus peregrinus
two psalms set
line breaking adjusted
fixed bad handling of hymn parts with '.' anywhere in the path
fix finding the default set of psalms (necessary to compile any of the older booklets)
fix path building
missing accent
corrected according to the authoritative book
Magnificat
syllabify
hymn, responsory, Magnificat