[split] util: Enables cross-publishing for 2.11

Problem

Although the specs tests were removed, we weren't publishing against
2.11.  Notably, util-eval will be killed for 2.11, and it's nontrivial
to get sbt to aggregate a project for some crossScalaVersions, and
not for others.  Also, we were depending on a scalacheck feature
that was removed in newer versions of scalacheck.

Solution

Upgraded scalacheck version for 2.9.2 to one that had a replacement
method that was the same in the up to date scalacheck.  Moved
util-eval out from being aggregated, and changed its crossScalaVersion
to only "2.9.2", "2.10.4".  It turned out that the version of sbt
we were on had a bug where it didn't use incremental compilation
if you used cross building, so I upgraded us to 0.13.5 across the
board.  util-logging was ooming, so I increased the heap size.

Result

We can now publish against 2.11

RB_ID=425979

project/build.properties

@@ -1 +1 @@
-sbt.version=0.13.2
+sbt.version=0.13.5

sbt

@@ -1,8 +1,8 @@
 #!/bin/bash
 
-sbtver=0.13.2
+sbtver=0.13.5
 sbtjar=sbt-launch.jar
-sbtsha128=d3237161dc38afd796d9e84ff202f8418cff98e2
+sbtsha128=f6308bd94bebdd37eb5e2fda732694ce0f34be74
 
 sbtrepo=http://repo.typesafe.com/typesafe/ivy-releases/org.scala-sbt/sbt-launch
 
@@ -35,6 +35,6 @@ java -ea                          \
   -XX:MaxTenuringThreshold=0      \
   -Xss8M                          \
   -Xms512M                        \
-  -Xmx1G                          \
+  -Xmx2G                          \
   -server                         \
   -jar $sbtjar "$@"