basic: rename util.h to logarithm.h

util.h is now about logarithms only, so we can rename it. Many files included
util.h for no apparent reason… Those includes are dropped.

src/network/netdev/fou-tunnel.c

@@ -13,7 +13,6 @@
 #include "parse-util.h"
 #include "string-table.h"
 #include "string-util.h"
-#include "util.h"
 
 static const char* const fou_encap_type_table[_NETDEV_FOO_OVER_UDP_ENCAP_MAX] = {
         [NETDEV_FOO_OVER_UDP_ENCAP_DIRECT] = "FooOverUDP",

src/network/netdev/l2tp-tunnel.c

@@ -15,7 +15,6 @@
 #include "socket-util.h"
 #include "string-table.h"
 #include "string-util.h"
-#include "util.h"
 
 static const char* const l2tp_l2spec_type_table[_NETDEV_L2TP_L2SPECTYPE_MAX] = {
         [NETDEV_L2TP_L2SPECTYPE_NONE]    = "none",

src/network/netdev/macsec.c

@@ -18,7 +18,6 @@
 #include "socket-util.h"
 #include "string-table.h"
 #include "string-util.h"
-#include "util.h"
 
 static void security_association_clear(SecurityAssociation *sa) {
         if (!sa)

src/network/netdev/tunnel.c

@@ -18,7 +18,6 @@
 #include "string-table.h"
 #include "string-util.h"
 #include "tunnel.h"
-#include "util.h"
 
 #define DEFAULT_IPV6_TTL   64
 #define IP6_FLOWINFO_FLOWLABEL  htobe32(0x000FFFFF)