• Add support for IPC_64 extensions into shmctl(2), semctl(2) and msgctl(2);
• add wrappers for mmap2(2) and ftruncate64(2) system calls;
• don't spam console with printf's when VFAT_READDIR_BOTH ioctl(2) is invoked;
• add support for SOUND_MIXER_READ_STEREODEVS ioctl(2);
• make msgctl(IPC_STAT) and IPC_SET actually working by converting from BSD msqid_ds to Linux and vice versa;
• properly return EINVAL if semget(2) is called with nsems being negative.

Reviewed by: marcel
Approved by: marcel
Tested with: LSB runtime test