Log Message:
Update to 20120811 release. Changelog:

Support Virtual Disk(VDI,VHD,VMDK) by VirtualBox DSO (VBoxDDU.so).
Use ADAPTIVE_NP for some mutex.
Decrese mutex lock time at transfer task.
Print # of reload count to syslog.
LU updating (except connected LU).
Ignore reload error, and retry next reload by SIGUP.
Use gcc 4.1 atomic builtin functions.
Fix some memory leak at exit.
Accept up to two SCSI commands in one LUN loop.
Omit inaccessible PG on SendTargets. (when multiple PG specified)
Faster normal exit.
Remove extra warning by clang.
Add NetBSD rc script.