I've just made the tags "core1.6" from the heads of release/, rce/, rceusr/, rceapp/ and quarks/.

Features of the new core:

• Revamped and better documented rtems_configure_*.cc.
• The core version and RTEMS object quotas are printed in the syslog just after a reboot.
• The addCommand command in the shell allows you to add shell commands dynamically.
• PGP init code can be called more than once; it will kill and restart existing service tasks.

The plain, optimized and debugging versions of the core all build and run.