Enabled object encoding for multiple keys in MSET. Added a test for memory leaks in test-redis.tcl when running on Mac OS X

log rebuilding, random refactoring, work in progress please wait for an OK commit before to use this version

DEBUG RELOAD implemented, and test-redis.tcl modified to use it to check for persistence consistency.

commented the HAVE_EPOLL test in config.h to allow compilation under Linux now that the epoll module is still missing

ae.c now supports multiple polling API modules, even if only ae_select.c is implemented currently. Also adding and removing an event is now O(1).

benchmarking with different number of LRANGE elements. Ability to change the glue output buffer limit by #define