ia64: math: add __scalbn* aliases

All other ports have __scalbn* aliases pointing back to scalbn*, but
the ia64 code had omitted them.  This didn't really matter as none
of the common code called them, but after a recent update, that's no
longer true.  Add the aliases needed by some common code to fix link
errors with libm due to them missing.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

ChangeLog.ia64

@@ -1,3 +1,12 @@
+2012-04-27  Mike Frysinger  <vapier@gentoo.org>
+
+	* sysdeps/ia64/fpu/s_scalbn.c (__scalbn): Rename from scalbn.
+	Add weak alias from scalbn to __scalbn.
+	* sysdeps/ia64/fpu/s_scalbnf.c (__scalbnf): Rename from scalbnf.
+	Add weak alias from scalbnf to __scalbnf.
+	* sysdeps/ia64/fpu/s_scalbnl.c (__scalbnl): Rename from scalbnl.
+	Add weak alias from scalbnl to __scalbnl.
+
 2012-04-27  Mike Frysinger  <vapier@gentoo.org>
 
 	* sysdeps/ia64/fpu/s_matherrf.c: Delete __STDC__.

sysdeps/ia64/fpu/s_scalbn.c

@@ -45,7 +45,7 @@
 double __libm_scalbn(double, int, int);
 
 
-double scalbn(double x, int n)
+double __scalbn(double x, int n)
 {
 
 #ifdef SIZE_INT_64
@@ -59,3 +59,5 @@ double scalbn(double x, int n)
 #endif
 
 }
+
+weak_alias (__scalbn, scalbn)

sysdeps/ia64/fpu/s_scalbnf.c

@@ -45,7 +45,7 @@
 float __libm_scalbnf(float, int, int);
 
 
-float scalbnf(float x, int n)
+float __scalbnf(float x, int n)
 {
 
 #ifdef SIZE_INT_64
@@ -59,3 +59,5 @@ float scalbnf(float x, int n)
 #endif
 
 }
+
+weak_alias (__scalbnf, scalbnf)

sysdeps/ia64/fpu/s_scalbnl.c

@@ -45,7 +45,7 @@
 long double __libm_scalbnl(long double, int, int);
 
 
-long double scalbnl(long double x, int n)
+long double __scalbnl(long double x, int n)
 {
 
 #ifdef SIZE_INT_64
@@ -59,3 +59,5 @@ long double scalbnl(long double x, int n)
 #endif
 
 }
+
+weak_alias (__scalbnl, scalbnl)