Upgrade snapshot to 2015-12-18

The August snapshot is no longer new enough for rust 1.7.0.  Without the
update rust's build process still tries to download its own snapshot,
which rather defeats the point of this.

recipes-devtools/rust/rust-snapshot-2015-12-18.inc

@@ -1,14 +1,14 @@
 ## snapshot info taken from rust/src/snapshots.txt
 ## TODO: find a way to add additional SRC_URIs based on the contents of an
 ##       earlier SRC_URI.
-RS_DATE = "2015-08-11"
-RS_SRCHASH = "1af31d4"
+RS_DATE = "2015-12-18"
+RS_SRCHASH = "3391630"
 # linux-x86_64
 RS_ARCH = "linux-x86_64"
-RS_HASH = "7df8ba9dec63ec77b857066109d4b6250f3d222f"
+RS_HASH = "97e2a5eb8904962df8596e95d6e5d9b574d73bf4"
 
 RUST_SNAPSHOT = "rust-stage0-${RS_DATE}-${RS_SRCHASH}-${RS_ARCH}-${RS_HASH}.tar.bz2"
 
-SRC_URI[rust-snapshot.md5sum] = "53b2e1f553eaeb88e8d60d5380670283"
-SRC_URI[rust-snapshot.sha256sum] = "5936f5ec4327d41f3aa9f98cbedebb6fd3d72715f8df578e0c9a669154c80bc3"
+SRC_URI[rust-snapshot.md5sum] = "5c29eb06c8b6ce6ff52f544f31efabe1"
+SRC_URI[rust-snapshot.sha256sum] = "a8dc5203673ce43f47316beb02ee0c427edb7bbde2ab5fc662a06b52db2950e7"
 

recipes-devtools/rust/rust.inc

@@ -2,7 +2,7 @@
 inherit rust
 inherit rust-installer
 require rust-shared-source.inc
-require rust-snapshot-2015-08-11.inc
+require rust-snapshot-2015-12-18.inc
 
 LIC_FILES_CHKSUM ="file://COPYRIGHT;md5=9c5a05eab0ffc3590e50db38c51d1425"