Set version numbers to 24.0-jre-SNAPSHOT.

This makes Maven consider 24.0-jre to be "newer" than 24.0-android.
That's preferable, as discussed in #2914, #2839, and https://docs.google.com/document/d/1NYGbfz56C0Oh4IGymXjeQUVK4FcRiqDbpc4vGLnDMrY/edit#

RELNOTES: To upgrade to Guava 24.0, change your version numbers to "24.0-jre." (Or, if are writing an Android app or Android-compatible library, use "24.0-android.")

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=167799453

guava-gwt/pom.xml

@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.guava</groupId>
     <artifactId>guava-parent</artifactId>
-    <version>24.0-SNAPSHOT</version>
+    <version>24.0-jre-SNAPSHOT</version>
   </parent>
   <artifactId>guava-gwt</artifactId>
   <name>Guava GWT compatible libs</name>

guava-testlib/pom.xml

@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.guava</groupId>
     <artifactId>guava-parent</artifactId>
-    <version>24.0-SNAPSHOT</version>
+    <version>24.0-jre-SNAPSHOT</version>
   </parent>
   <artifactId>guava-testlib</artifactId>
   <name>Guava Testing Library</name>

guava-tests/pom.xml

@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.guava</groupId>
     <artifactId>guava-parent</artifactId>
-    <version>24.0-SNAPSHOT</version>
+    <version>24.0-jre-SNAPSHOT</version>
   </parent>
   <artifactId>guava-tests</artifactId>
   <name>Guava Unit Tests</name>

guava/pom.xml

@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.guava</groupId>
     <artifactId>guava-parent</artifactId>
-    <version>24.0-SNAPSHOT</version>
+    <version>24.0-jre-SNAPSHOT</version>
   </parent>
   <artifactId>guava</artifactId>
   <packaging>bundle</packaging>

pom.xml

@@ -11,7 +11,7 @@
   </parent>
   <groupId>com.google.guava</groupId>
   <artifactId>guava-parent</artifactId>
-  <version>24.0-SNAPSHOT</version>
+  <version>24.0-jre-SNAPSHOT</version>
   <packaging>pom</packaging>
   <name>Guava Maven Parent</name>
   <url>https://github.com/google/guava</url>