fix of LOGFACILITY on NC by MattS

fixes EUCA-4961
Fixing couple problems in NC init script

- virtualization flag check for KVM was not functional
- virtualization flag was failing for Xen unnecessarily

Fixes EUCA-7970, EUCA-7989
Fixing and normalizing instance dir cleanup

Introduced blobstore_delete_nonblobs() that is now used on
both normal instance termination and on fsck-induced instance
directory cleanup routine.

Fixes EUCA-7353
Added timeout and two retries to blkid invocation

Fixes EUCA-8083
fix for race/segfault when using -s option to eucanetd.  fixed EUCA-8352
EUCA-5959 stopped instances show invalid value for public private DNS names
EUCA-7708-2, allowing locationconstraint to be null
Merge branch 'dev/dmitrii/3.4.1' into maint/3.4/testing
Changed last modified date format in copy object response to ISO8601 format

Fixes EUCA-8111
Fixes ACL listing for bucket-owner-read, bucket-owner-full-control and authenticate-read canned ACLs

Fixes EUCA-7625, EUCA-7712, EUCA-7724, EUCA-7728
Implement euca_execlp() utility function
EUCA-7575
Merge branch 'dev/chuck/SEC' into testing
Ran make indent after merge