SGF-283 - Prepare 1.4.0.RC1.

Upgraded to Spring Data Commons 1.8.0.RC. Switched to milestone repository.

build.gradle

@@ -12,7 +12,7 @@ group = 'org.springframework.data'
 
 repositories {
   maven { url "http://dist.gemstone.com.s3.amazonaws.com/maven/release"}
-  maven { url "http://repo.spring.io/libs-snapshot" }
+  maven { url "http://repo.spring.io/libs-milestone" }
   maven { url "http://repo.spring.io/plugins-release"}
 }
 

gradle.properties

@@ -10,5 +10,5 @@ mockitoVersion=1.9.5
 slf4jVersion=1.7.6
 spring.range="[3.2.0, 4.0.0)"
 springVersion=3.2.8.RELEASE
-springDataCommonsVersion=1.8.0.BUILD-SNAPSHOT
+springDataCommonsVersion=1.8.0.RC1
 version=1.4.0.BUILD-SNAPSHOT