procfs now shows information about the group that each thread belongs:  Like parents, group member, open file, and open sockets

NxConsole: Fix typo that caused compile error when CONFIG_NXCONSOLE_BPP is less than 8.  From Librae

Create procfs_utils.c; File missed from last commit; + remove warning from mm_memalign.c (how did this work before?)

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

strftime should also return zero if the resulting string is truncated and/or not properly NUL terminated

libc logic should not directly assign errno, but should use set_errno() macro.  This is because in the kernel build, errno is a system call