guix: m2-planet: Update to 1.10.0-0.754c5de.

For 64bit platforms, this fix is essential

    85dd953 Add padding when loading global ints on 64-bit arches.

* guix/git/mes.scm (m2-planet): Update to latest git.

guix/git/mes.scm

@@ -86,19 +86,22 @@ get_machine.")
     (license gpl3+)))
 
 (define-public m2-planet
+  (let ((version "1.10.0")
+        (revision "0")
+        (commit "754c5de7d9ba980b98f3213d1f446cf59166dc16"))
     (package
       (name "m2-planet")
-    (version "1.10.0")
+      (version (git-version version revision commit))
       (source (origin
                 (method git-fetch)
                 (uri (git-reference
                       (url "https://github.com/oriansj/m2-planet")
-                    (commit (string-append "Release_" version))
+                      (commit commit)
                       (recursive? #t))) ;for M2libc
                 (file-name (git-file-name name version))
                 (sha256
                  (base32
-                "03ixvfdzhyy1d94iqpwl0p924pdvdp7yq4ggm05w3c013kzy2y12"))))
+                  "15hjnq7rimspbjddi8fnx1azcyajbnbv404zbgim8aq42k498fnp"))))
       (native-inputs (list mescc-tools))
       (build-system gnu-build-system)
       (supported-systems '("i686-linux" "x86_64-linux"
@@ -117,7 +120,7 @@ get_machine.")
 mescc-tools compiles a subset of the C language into working binaries
 with introspective steps inbetween.")
       (home-page "https://github.com/oriansj/m2-planet")
-    (license gpl3+)))
+      (license gpl3+))))
 
 (define-public nyacc-0.99
   (package