Sync upstream FreeBSD libm.

Test: treehugger
Change-Id: I583a3e93821d512c975db34fc1610ffd22445d58
diff --git a/libm/upstream-freebsd/lib/msun/src/e_log.c b/libm/upstream-freebsd/lib/msun/src/e_log.c
index 68bc107..03ce820 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_log.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_log.c
@@ -14,7 +14,7 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
-/* __ieee754_log(x)
+/* log(x)
  * Return the logrithm of x
  *
  * Method :                  
@@ -86,7 +86,7 @@
 static volatile double vzero = 0.0;
 
 double
-__ieee754_log(double x)
+log(double x)
 {
 	double hfsq,f,s,z,R,w,t1,t2,dk;
 	int32_t k,hx,i,j;