Change load to export all symbols.
Change load to export all symbols.

This fixes a problem with loading into trafficserver,
where ib_provider_register fails:

192         rc = ib_provider_register(ib,
(gdb) p ib_provider_register
$13 = {ib_status_t (ib_engine_t *, const char *, const char *,
    ib_provider_t **, void *,
    ib_provider_inst_init_fn_t)} 0x745c50 <ib_provider_register>
(gdb) s
/usr/local/trafficserver/bin/traffic_server: symbol lookup error: /usr/local/ironbee/lib/ibmod_pcre.so: undefined symbol: ib_provider_register

b1v1r/ironbee,b1v1r/ironbee,b1v1r/ironbee,ironbee/ironbee,ironbee/ironbee,ironbee/ironbee,ironbee/ironbee,ironbee/ironbee,ironbee/ironbee,b1v1r/ironbee,ironbee/ironbee,b1v1r/ironbee,ironbee/ironbee,b1v1r/ironbee,b1v1r/ironbee,ironbee/ironbee,b1v1r/ironbee,b1v1r/ironbee,ironbee/ironbee,b1v1r/ironbee,ironbee/ironbee,b1v1r/ironbee,ironbee/ironbee,b1v1r/ironbee