Portability fix for Innodb


BUILD/compile-pentium-max:
  Change mode to -rwxrwxr-x
BUILD/SETUP.sh:
  Changed -O6 to -O3
Docs/manual.texi:
  Changed -O6 to -O3
configure.in:
  Changed -O6 to -O3
  Added test of pthread_yield (For Innodb)
innobase/os/os0thread.c:
  Fix portability problem with RedHat 6.1
scripts/safe_mysqld.sh:
  Fix option --mysqld-version
sql/gen_lex_hash.cc:
  Smaller array
support-files/mysql.spec.sh:
  Changed -O6 to -O3