Fixed some portability things in my_gethostbyname_r
Portability fix for type_decimal.test


BUILD/SETUP.sh:
  Fixes for gcc 3.1
extra/resolveip.c:
  Cleanup
include/my_net.h:
  Portability fix for SCO
mysql-test/t/type_decimal.test:
  Portability fix for FreeBSD
mysys/Makefile.am:
  Portability fix for OSF1
mysys/raid.cc:
  Portability fix for OSF1