lang/seed7: update to 05_20161002

20161002:

• Definitions of float shift operators << and >> have been added to float.s7i (A << B is equivalent to A * 2.0 B and A >> B is equivalent to A / 2.0 B).
• Checks for the operators << and >> have been added to chflt.sd7.
• Interpreter and compiler have been improved to support the primitiv actions FLT_LSHIFT and FLT_RSHIFT.
• The example program find7.sd7 has been added. This program is an utility to search for files and file contents.
• Documentation comments have been added to arrlib.c, biglib.c, blnlib.c, bstlib.c, fillib.c, pcslib.c, prclib.c, prglib.c and strlib.c.