[PATCH] fix TLS support detection for sh targets

[Rich Felker]

Bad patterns caused configure to always disable TLS for big-endian sh
targets and for anything other than sh 3/4.

Rich

--- gcc-5.2.0.base/gcc/configure.ac     2015-08-11 16:23:36.000000000 +0000
+++ gcc-5.2.0/gcc/configure.ac  2015-09-13 08:17:31.714972082 +0000
@@ -3300,7 +3300,7 @@
        tls_first_minor=14
        tls_as_opt="-m64 -Aesame --fatal-warnings"
        ;;
-  sh-*-* | sh[34]-*-*)
+  sh-*-* | sh[123456789lbe]*-*-*)
     conftest_s='
        .section ".tdata","awT",@progbits
 foo:   .long   25
--- gcc-5.2.0.base/gcc/configure        2015-08-11 16:23:35.000000000 +0000
+++ gcc-5.2.0/gcc/configure     2015-09-13 08:17:42.608304751 +0000
@@ -23754,7 +23754,7 @@
        tls_first_minor=14
        tls_as_opt="-m64 -Aesame --fatal-warnings"
        ;;
-  sh-*-* | sh[34]-*-*)
+  sh-*-* | sh[123456789lbe]*-*-*)
     conftest_s='
        .section ".tdata","awT",@progbits
 foo:   .long   25