build: stop using local Eclipse as a part of dependency

This change makes it possible to build Eclipse plugins without
local Eclipse IDE. It is also possible to use metadata of artifacts
(pom.xml) to maintain license, vulnerability, and version of
dependencies.

close #1868

spotbugs/build.gradle

@@ -150,25 +150,16 @@ eclipse.classpath.file {
     }
 }
 
-def copyLibsForEclipse = tasks.register('copyLibsForEclipse', Copy) {
-    from configurations.testCompileClasspath, configurations.testRuntimeClasspath, configurations.guiRuntimeClasspath, configurations.guiCompileClasspath, configurations.logBinding
-    into ".libs"
-    include "*.jar"
-    exclude "*xml-apis*.jar"
-    exclude "*spotbugs-annotations*.jar"
-    duplicatesStrategy = DuplicatesStrategy.EXCLUDE
-}
-
 def updateManifest = tasks.register('updateManifest') {
   inputs.file "$projectDir/META-INF/MANIFEST-TEMPLATE.MF"
   outputs.file "$projectDir/META-INF/MANIFEST.MF"
-  dependsOn configurations.runtimeClasspath, copyLibsForEclipse
+  dependsOn configurations.runtimeClasspath
   doLast {
     def manifestSpec = manifest {
       from "$projectDir/META-INF/MANIFEST-TEMPLATE.MF"
       attributes 'Main-Class': 'edu.umd.cs.findbugs.LaunchAppropriateUI',
                'Bundle-Version': project.version.replace('-', '.'),
-               'Bundle-ClassPath': 'spotbugs.jar,' +  fileTree(dir: '.libs').collect { projectDir.toPath().relativize(it.toPath()).toString() }.join(',')
+               'Bundle-ClassPath': 'spotbugs.jar,' +  configurations.runtimeClasspath.collect { it.name }.join(',')
     }
     // write manifests
     manifestSpec.writeTo("$projectDir/META-INF/MANIFEST.MF")