Change references to gPXE to iPXE.

Development of EtherBoot gPXE was always development
of iPXE core developer Michael Brown.

http://git.etherboot.org/?p=gpxe.git was last updated in 2011
https://git.ipxe.org/ipxe.git is well alive

This  s/gPXE/iPXE/ reflects that.
Signed-off-by: Geert Stappers <stappers@stappers.nl>

CHANGELOG

@@ -2054,13 +2054,13 @@ version 2.47
 
 	Support arbitrarily encapsulated DHCP options, suggestion
 	and initial patch from Samium Gromoff. This is useful for
-	(eg) gPXE, which expect all its private options to be
+	(eg) iPXE, which expect all its private options to be
 	encapsulated inside a single option 175. So, eg, 
 
 	dhcp-option = encap:175, 190, "iscsi-client0"
 	dhcp-option = encap:175, 191, "iscsi-client0-secret"
 
-	will provide iSCSI parameters to gPXE.
+	will provide iSCSI parameters to iPXE.
 
 	Enhance --dhcp-match to allow testing of the contents of a
 	client-sent option, as well as its presence. This

CHANGELOG.archive

@@ -2433,7 +2433,7 @@ version 2.41
 
 	    Add --dhcp-match flag, to check for arbitrary options in
 	    DHCP messages from clients. This enables use of dnsmasq
-	    with gPXE. Thanks to Rance Hall for the suggestion.
+	    with iPXE. Thanks to Rance Hall for the suggestion.
 
 	    Added --dhcp-broadcast, to force broadcast replies to DHCP
 	    clients which need them but are too dumb or too old to

dnsmasq.conf.example

@@ -444,14 +444,14 @@
 # The same as above, but use custom tftp-server instead machine running dnsmasq
 #dhcp-boot=pxelinux,server.name,192.168.1.100
 
-# Boot for Etherboot gPXE. The idea is to send two different
-# filenames, the first loads gPXE, and the second tells gPXE what to
-# load. The dhcp-match sets the gpxe tag for requests from gPXE.
-#dhcp-match=set:gpxe,175 # gPXE sends a 175 option.
-#dhcp-boot=tag:!gpxe,undionly.kpxe
-#dhcp-boot=mybootimage
-
-# Encapsulated options for Etherboot gPXE. All the options are
+# Boot for iPXE. The idea is to send two different
+# filenames, the first loads iPXE, and the second tells iPXE what to
+# load. The dhcp-match sets the ipxe tag for requests from iPXE.
+#dhcp-boot=undionly.kpxe
+#dhcp-match=set:ipxe,175 # iPXE sends a 175 option.
+#dhcp-boot=tag:ipxe,http://boot.ipxe.org/demo/boot.php
+
+# Encapsulated options for iPXE. All the options are
 # encapsulated within option 175
 #dhcp-option=encap:175, 1, 5b         # priority code
 #dhcp-option=encap:175, 176, 1b       # no-proxydhcp

src/rfc2131.c

@@ -909,7 +909,7 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
 		  
 		  if (!workaround && boot)
 		    {
-		      /* Provide the bootfile here, for gPXE, and in case we have no menu items
+		      /* Provide the bootfile here, for iPXE, and in case we have no menu items
 			 and set discovery_control = 8 */
 		      if (boot->next_server.s_addr) 
 			mess->siaddr = boot->next_server;