Eclipse project deps come after third-party libs

This commit is a backport of SPR-11836.

Prior to this commit, the ordering of classpath entries in the
generated Eclipse .classpath files did not align with the intended
dependency management configured in the Gradle build. Specifically,
project dependencies often came before dependencies on third-party
libraries required for the given project, causing the project not to
compile in Eclipse.

This commit fixes this issue by introducing new functionality in the
ide.gradle script that moves all project dependencies to the end of the
generated classpath.

Issue: SPR-12947, SPR-11836

Author: sbrannen

gradle/ide.gradle

@@ -41,6 +41,17 @@ eclipse.classpath.file.whenMerged { classpath ->
 	}
 }
 
+// Ensure project dependencies come after 3rd-party libs (SPR-11836)
+// https://jira.spring.io/browse/SPR-11836
+eclipse.classpath.file.whenMerged { classpath ->
+	classpath.entries.findAll { it instanceof ProjectDependency }.each {
+		// delete from original position
+		classpath.entries.remove(it)
+		// append to end of classpath
+		classpath.entries.add(it)
+	}
+}
+
 // Allow projects to be used as WPT modules
 eclipse.project.natures "org.eclipse.wst.common.project.facet.core.nature"