Fix __finitel libm compat symbol version [committed]

[Joseph Myers]

The changes to restrict implementation-namespace symbol aliases such
as __finitel to compat symbols used code for __finitel in libm
analogous to that for __finitel in libc.  However, the versions for
the two symbols are actually different, GLIBC_2.0 in libc and
GLIBC_2.1 in libm.  This patch fixes the handling of the libm compat
symbol.

Tested for mips (o32), where it fixes an ABI test failure.  Committed.

2016-01-20  Joseph Myers  <joseph@codesourcery.com>

	* sysdeps/ieee754/dbl-64/s_finite.c
	[NO_LONG_DOUBLE && LDBL_CLASSIFY_COMPAT] (__finitel): Define
	compat symbol at version GLIBC_2_1 and use GLIBC_2_1 in
	SHLIB_COMPAT condition for libm, not GLIBC_2_0.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c
	[NO_LONG_DOUBLE && LDBL_CLASSIFY_COMPAT] (__finitel): Likewise.

diff --git a/sysdeps/ieee754/dbl-64/s_finite.c b/sysdeps/ieee754/dbl-64/s_finite.c
index b71ae12..69141db 100644
--- a/sysdeps/ieee754/dbl-64/s_finite.c
+++ b/sysdeps/ieee754/dbl-64/s_finite.c
@@ -42,8 +42,8 @@ weak_alias (__finite, finite)
 #  if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_23)
 compat_symbol (libc, __finite, __finitel, GLIBC_2_0);
 #  endif
-#  if SHLIB_COMPAT (libm, GLIBC_2_0, GLIBC_2_23)
-compat_symbol (libm, __finite, __finitel, GLIBC_2_0);
+#  if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_23)
+compat_symbol (libm, __finite, __finitel, GLIBC_2_1);
 #  endif
 # endif
 weak_alias (__finite, finitel)
diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c b/sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c
index c8e2a7c..ef51608 100644
--- a/sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c
+++ b/sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c
@@ -34,8 +34,8 @@ weak_alias (__finite, finite)
 #  if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_23)
 compat_symbol (libc, __finite, __finitel, GLIBC_2_0);
 #  endif
-#  if SHLIB_COMPAT (libm, GLIBC_2_0, GLIBC_2_23)
-compat_symbol (libm, __finite, __finitel, GLIBC_2_0);
+#  if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_23)
+compat_symbol (libm, __finite, __finitel, GLIBC_2_1);
 #  endif
 # endif
 weak_alias (__finite, finitel)

-- 
Joseph S. Myers
joseph@codesourcery.com