Added command cp for copying files; mkzexfs was improved; znfscl command was added...

Added command cp for copying files; mkzexfs was improved; znfscl command was added - client for
znfs server; dev.c cleanup - no one filesystem is initialized here; Added ethernet io base
address into iflist command; cleanup in partition_add (); Added support for zexfs into partition
table - 0x90 ID; fixed bug in partition_table_new () - memory corruption; added font support into
kernel's graphical shell; added vfs_cp () function for copying files between filesystems;
vfs_mkdir () and vfs_touch () was improved; Added ATA status handling; small cleanup in drive.c;
Added pci_device_adjust () function for bus master and latency control; Added pci_device_enable
() for device power control; Added file read/write support into ZeXFS; Improvements in ZeXFS with
small fixes; ZNFS code was improved; Network drivers were updated; Some improvements in rtl8139
ethernet driver - more revisions are supported; netdev_create () need new parameter - io base
addr of ethernet chip; command fdisk was updated