Add CHANGES entry for GL #56, revise CHANGES entry for GL #13

4906.	[func]		Replace getquad() with inet_pton(), completing
			change #4900. [GL #56]

4900.	[func]		Remove all uses of inet_aton().  As a result of this
			change, IPv4 addresses are now only accepted in
			dotted-quad format. [GL #13]

CHANGES

+4906.	[func]		Replace getquad() with inet_pton(), completing
+			change #4900. [GL #56]
+
 4905.	[bug]		irs_resconf_load() ignored resolv.conf syntax errors
 			when "domain" or "search" options were present in that
 			file. [GL #110]
@@ -15,7 +18,9 @@
 			for a domain that time out, as well as the servers
 			that respond. [GL #64]
 
-4900.	[cleanup]	Remove all uses of inet_aton(). [GL #13]
+4900.	[func]		Remove all uses of inet_aton().  As a result of this
+			change, IPv4 addresses are now only accepted in
+			dotted-quad format. [GL #13]
 
 4899.	[test]		Convert most of the remaining system tests to be able
 			to run in parallel, continuing the work from change
@@ -151,11 +156,11 @@
 
 4860.	[bug]		isc_int8_t should be signed char.  [RT #46973]
 
-4859.   [bug]           A loop was possible when attempting to validate
-                        unsigned CNAME responses from secure zones;
-                        this caused a delay in returning SERVFAIL and
-                        also increased the chances of encountering
-                        CVE-2017-3145. [RT #46839]
+4859.	[bug]		A loop was possible when attempting to validate
+			unsigned CNAME responses from secure zones;
+			this caused a delay in returning SERVFAIL and
+			also increased the chances of encountering
+			CVE-2017-3145. [RT #46839]
 
 4858.	[security]	Addresses could be referenced after being freed
 			in resolver.c, causing an assertion failure.