[klibc] Rename llseek.c to lseek.c

The file llseek.c actually implements lseek() on 32-bit platforms (on
64-bit platforms, lseek() is a plain system call.)  Rename the file
accordingly.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/usr/klibc/Kbuild b/usr/klibc/Kbuild
index fc90d53..2bef9ca 100644
--- a/usr/klibc/Kbuild
+++ b/usr/klibc/Kbuild
@@ -52,7 +52,7 @@
 	  clearenv.o nullenv.o \
 	  getopt.o getopt_long.o readdir.o scandir.o alphasort.o remove.o \
 	  syslog.o closelog.o pty.o getpt.o posix_openpt.o isatty.o reboot.o \
-	  time.o utime.o llseek.o nice.o getpriority.o \
+	  time.o utime.o lseek.o nice.o getpriority.o \
 	  qsort.o bsearch.o \
 	  lrand48.o jrand48.o mrand48.o nrand48.o srand48.o seed48.o \
 	  inet/inet_ntoa.o inet/inet_aton.o inet/inet_addr.o \
diff --git a/usr/klibc/llseek.c b/usr/klibc/lseek.c
similarity index 98%
rename from usr/klibc/llseek.c
rename to usr/klibc/lseek.c
index 93d813b..a313bed 100644
--- a/usr/klibc/llseek.c
+++ b/usr/klibc/lseek.c
@@ -1,5 +1,5 @@
 /*
- * llseek.c
+ * lseek.c
  *
  * On 32-bit platforms, we need to use the _llseek() system call
  * rather than lseek(), to be able to handle large disks.  _llseek()