10.31.1 Bugs Fixed

• Quoting of atoms when switching between iso and sicstus mode.
• The spld option -LD did not work correctly.
• library(clpfd) bugs: unbreakable infinite loop, fd_set/2, lex_chain/[1,2], #\=, waking suspended goal at a safe time.
• Prologbeans did not fast_write variables correctly.
• Relocation problem while reading `.po/.sav' files.