[PATCH][AARCH64][libgcc] Remove t-softfp-sfdf and t-softfp-excl from aarch64 configuration

[Jim MacArthur]

In response to a comment from  
http://gcc.gnu.org/ml/gcc-patches/2012-05/msg01721.html, this patch removes 
t-softfp-sfdf and t-softfp-excl from the aarch64 entries in libgcc/config.host. 
Every setting in these files is overridden by t-softfp.

Addition to libgcc/ChangeLog:

2012-06-01  Jim MacArthur<jim.macart...@arm.com>

        * config.host (aarch64*-*-elf): Remove references to t-softfp-sfdf and
        t-softfp-excl.
        (aarch64*-*-linux*): Likewise.


diff --git a/libgcc/config.host b/libgcc/config.host
index 56beddd..0b80afd 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -291,12 +291,10 @@ case ${host} in
        ;;
 aarch64*-*-elf)
        extra_parts="$extra_parts crtbegin.o crtend.o crti.o crtn.o"
-       tmake_file="${tmake_file} t-softfp-sfdf t-softfp-excl"
        tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp"
        ;;
 aarch64*-*-linux*)
        md_unwind_header=aarch64/linux-unwind.h
-       tmake_file="${tmake_file} t-softfp-sfdf t-softfp-excl"
        tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp"
        tmake_file="${tmake_file} ${cpu_type}/t-linux"
        ;;