Add description of work queues to the porting guide.  Update comments
Fix minor typos in documentation
Support for the STM32 F411RE from Serg Podtynnyi
Fix file mode on modified files
Default for CONFIG_SCHED_HPWORK should be no
Update ChangeLog
Extend the Nucleo-F401RE configuration to also support the Nucleo-F411RE.  From Serg Podtynnyi