Add MEMCPY(), and use it instead of its pattern

[alejandro-colomar]

---

Revisions:

v1b

• Rebase

$ git rd 
1:  dffde298 = 1:  6bc38c93 lib/string/strcpy/: MEMCPY(): Add macro
2:  bb82ea8f = 2:  fcbdb102 lib/utmp.c: prepare_utmp(): Use MEMCPY() instead of its pattern

v1c

• Rebase

$ git rd 
1:  6bc38c93 = 1:  4e58e271 lib/string/strcpy/: MEMCPY(): Add macro
2:  fcbdb102 = 2:  593fd728 lib/utmp.c: prepare_utmp(): Use MEMCPY() instead of its pattern

v1d

• Rebase

$ git rd 
1:  4e58e271 = 1:  547300ae lib/string/strcpy/: MEMCPY(): Add macro
2:  593fd728 = 2:  33c2c97f lib/utmp.c: prepare_utmp(): Use MEMCPY() instead of its pattern

v1d

• Rebase

$ git rd 
1:  4fc3f696 = 1:  163d8535 lib/string/strcpy/: strncpytail(), STRNCPYTAIL(): Add APIs
2:  df8b604d ! 2:  95ab3cb6 lib/utmp.c: Use STRNCPYTAIL() instead of its pattern
    @@ Commit message
     
      ## lib/utmp.c ##
     @@
    - #include "string/strcmp/streq.h"
    + #include "string/strcmp/strneq.h"
      #include "string/strcmp/strprefix.h"
      #include "string/strcpy/strncpy.h"
     +#include "string/strcpy/strncpytail.h"

v1e

• Rebase

$ git rd 
1:  c6e3fb88 = 1:  09766c81 lib/string/strcpy/: MEMCPY(): Add macro
2:  b490b803 ! 2:  136fb881 lib/utmp.c: prepare_utmp(): Use MEMCPY() instead of its pattern
    @@ lib/utmp.c
     +#include "string/strcpy/memcpy.h"
      #include "string/strcpy/strncpy.h"
      #include "string/strcpy/strtcpy.h"
    - #include "string/strdup/xstrdup.h"
    + #include "string/strdup/strdup.h"
     @@ lib/utmp.c: prepare_utmp(const char *name, const char *line, const char *host,
                        } else if (info->ai_family == AF_INET6) {
                                struct sockaddr_in6 *sa =