Move sleep() and usleep() from sched/ to libc/unistd/.  These functions now are simple wrappers for nanosleep().  Remove sleep() and usleep() from system calls; add nanosleep() to system calls
Finish A10 Timer register definitions
A10: Timer interrupt handler
A10:  Add A10 configuration header file
Eliminate some warnings in the pcDuino A10 build
A10 serial driver (still needs some work).  From Alan Carvalho de Assis
Create procfs_utils.c; File missed from last commit; + remove warning from mm_memalign.c (how did this work before?)
Support /proc/uptime
/proc/uptime logic needs to sample timer in case multiple reads are used to read the time
Trivial enhancement to /proc/uptime
NxConsole: Fix typo that caused compile error when CONFIG_NXCONSOLE_BPP is less than 8.  From Librae
/proc task directories can now have sub-directories
procfs now shows information about the group that each thread belongs:  Like parents, group member, open file, and open sockets
procfs now shows stack thread information
ARMv7-A: If the page table does not like in same address range as .text and primary RAM, then we will need to set up an additional mapping for the page table at boot time.
Back port some A10 changes into the SAMA5 memory map definitions
Review Cortex-A9 CP15 registers and update register definitions
Trivial updates to comments and README files
Add support for Cortex-A5 and A8
Cosmetic changes to comments and README files