* configure.host (freebsd*): Set abi_baseline_pair.
        * config/abi/i386-freebsd4/baseline_symbols.txt: Update from 3.2
        (at or near first release) to 3.3.
        * config/abi/i386-freebsd5/baseline_symbols.txt: New file.
        * config/abi/alpha-freebsd5/baseline_symbols.txt: New file.
        * config/abi/sparc-freebsd5/baseline_symbols.txt: New file.

From-SVN: r68402