util/crossgcc/buildgcc: Upgrade MPC from 1.0.1 to 1.0.3

The following changes are included.

Changes in version 1.0.3:
  - Fixed mpc_pow, see
    http://lists.gforge.inria.fr/pipermail/mpc-discuss/2014-October/001315.html
  - #18257: Switched to libtool 2.4.5.

Changes in version 1.0.2:
  - Fixed mpc_atan, mpc_atanh for (+-0, +-1), see
    http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57994#c7
  - Fixed mpc_log10 for purely imaginary argument, see
    http://lists.gforge.inria.fr/pipermail/mpc-discuss/2012-September/001208.html

Upgrading also fixes the issue, where for example running `make crossgcc-arm`
ails as MPC cannot be built.

	Building MPC 1.0.1 ... failed

As it worked for others, it turns out that I had a release archive for
MPC 1.0.1 cached from October 2014, which was generated incorrectly, so
that `./configure` and `Makefile` are missing.

	$ LANG=C ls -l util/crossgcc/tarballs/mpc-1.0.1.tar.gz
	-rw-r--r-- 1 joey joey 224232 Oct 19  2013 util/crossgcc/tarballs/mpc-1.0.1.tar.gz
	$ md5sum util/crossgcc/tarballs/mpc-1.0.1.tar.gz
	22a27bee89616dca4d654fc579a816e5  util/crossgcc/tarballs/mpc-1.0.1.tar.gz
	$ md5sum mpc-1.0.1.tar.gz # downloaded today
	b32a2e1a3daa392372fbd586d1ed3679  mpc-1.0.1.tar.gz

So upgrade to MPC 1.0.3 as the release archive as of today contains the
needed files.

	$ md5sum util/crossgcc/tarballs/mpc-1.0.3.tar.gz
	d6a1d5f8ddea3abd2cc3e98f58352d26  util/crossgcc/tarballs/mpc-1.0.3.tar.gz

Change-Id: Ibfd02a9b362b12361b210d512420b87caebb0fdf
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
TEST:Run `make crossgcc-arm` and observe `Building MPC 1.0.3 ... ok`.
Reviewed-on: http://review.coreboot.org/8521
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index a35bf33..e4ddbc2 100755
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -20,8 +20,8 @@
 # Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
 #
 
-CROSSGCC_DATE="November 19th, 2014"
-CROSSGCC_VERSION="1.25"
+CROSSGCC_DATE="February 23th, 2015"
+CROSSGCC_VERSION="1.26"
 
 # default settings
 TARGETDIR=`pwd`/xgcc
@@ -31,7 +31,7 @@
 # version numbers
 GMP_VERSION=5.1.2
 MPFR_VERSION=3.1.2
-MPC_VERSION=1.0.1
+MPC_VERSION=1.0.3
 LIBELF_VERSION=0.8.13
 GCC_VERSION=4.8.3
 GCC_AUTOCONF_VERSION=2.69