Fix __finitel libm compat symbol version.

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.

	* 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.

ChangeLog

@@ -1,5 +1,12 @@
 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.
+
 	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/localplt.data
 	(__gtsf2): Add as optional for libc.so.
 	(__unordsf2): Likewise.

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)

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)