[build] Rename gPXE to iPXE

Access to the gpxe.org and etherboot.org domains and associated
resources has been revoked by the registrant of the domain.  Work
around this problem by renaming project from gPXE to iPXE, and
updating URLs to match.

Also update README, LOG and COPYRIGHTS to remove obsolete information.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/drivers/bus/eisa.c

@@ -3,9 +3,9 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <errno.h>
-#include <gpxe/io.h>
+#include <ipxe/io.h>
 #include <unistd.h>
-#include <gpxe/eisa.h>
+#include <ipxe/eisa.h>
 
 FILE_LICENCE ( GPL2_OR_LATER );
 

src/drivers/bus/isa.c

@@ -3,8 +3,8 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <errno.h>
-#include <gpxe/io.h>
-#include <gpxe/isa.h>
+#include <ipxe/io.h>
+#include <ipxe/isa.h>
 
 FILE_LICENCE ( GPL2_OR_LATER );
 

src/drivers/bus/isa_ids.c

@@ -1,7 +1,7 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <byteswap.h>
-#include <gpxe/isa_ids.h>
+#include <ipxe/isa_ids.h>
 
 /* 
  * EISA and ISAPnP IDs are actually mildly human readable, though in a

src/drivers/bus/isapnp.c

@@ -62,9 +62,9 @@ FILE_LICENCE ( GPL2_OR_LATER );
 #include <string.h>
 #include <stdio.h>
 #include <errno.h>
-#include <gpxe/io.h>
+#include <ipxe/io.h>
 #include <unistd.h>
-#include <gpxe/isapnp.h>
+#include <ipxe/isapnp.h>
 
 /**
  * ISAPnP Read Port address.

src/drivers/bus/mca.c

@@ -12,8 +12,8 @@ FILE_LICENCE ( BSD2 );
 #include <stdlib.h>
 #include <stdio.h>
 #include <errno.h>
-#include <gpxe/io.h>
-#include <gpxe/mca.h>
+#include <ipxe/io.h>
+#include <ipxe/mca.h>
 
 static void mcabus_remove ( struct root_device *rootdev );
 

src/drivers/bus/pci.c

@@ -26,9 +26,9 @@ FILE_LICENCE ( GPL2_OR_LATER );
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>
-#include <gpxe/tables.h>
-#include <gpxe/device.h>
-#include <gpxe/pci.h>
+#include <ipxe/tables.h>
+#include <ipxe/device.h>
+#include <ipxe/pci.h>
 
 /** @file
  *

src/drivers/bus/pcibackup.c

@@ -19,8 +19,8 @@
 FILE_LICENCE ( GPL2_OR_LATER );
 
 #include <stdint.h>
-#include <gpxe/pci.h>
-#include <gpxe/pcibackup.h>
+#include <ipxe/pci.h>
+#include <ipxe/pcibackup.h>
 
 /** @file
  *

src/drivers/bus/pciextra.c

@@ -1,7 +1,7 @@
 FILE_LICENCE ( GPL2_OR_LATER );
 
 #include <stdint.h>
-#include <gpxe/pci.h>
+#include <ipxe/pci.h>
 
 /**
  * Look for a PCI capability

src/drivers/bus/virtio-pci.c

@@ -12,9 +12,9 @@
  */
 
 #include "etherboot.h"
-#include "gpxe/io.h"
-#include "gpxe/virtio-ring.h"
-#include "gpxe/virtio-pci.h"
+#include "ipxe/io.h"
+#include "ipxe/virtio-ring.h"
+#include "ipxe/virtio-pci.h"
 
 int vp_find_vq(unsigned int ioaddr, int queue_index,
                struct vring_virtqueue *vq)

src/drivers/bus/virtio-ring.c

@@ -15,9 +15,9 @@
  */
 
 #include "etherboot.h"
-#include "gpxe/io.h"
-#include "gpxe/virtio-ring.h"
-#include "gpxe/virtio-pci.h"
+#include "ipxe/io.h"
+#include "ipxe/virtio-ring.h"
+#include "ipxe/virtio-pci.h"
 
 #define BUG() do { \
    printf("BUG: failure at %s:%d/%s()!\n", \