Improve Jenkins test structure

Jenkinsfile

@@ -36,8 +36,9 @@ pipeline {
             steps {
                 script {
                     env.LIBRARIES.split().each { LIBRARY ->
+                        stage("${LIBRARY}") {
                             env.R6RS_SCHEMES.split().each { SCHEME ->
-                            stage("${SCHEME} ${LIBRARY}") {
+                                stage("${SCHEME}") {
                                     catchError(buildResult: 'SUCCESS', stageResult: 'FAILURE') {
                                         sh "make SCHEME=${SCHEME} LIBRARY=${LIBRARY} RNRS=r6rs test-docker"
                                     }
@@ -47,12 +48,14 @@ pipeline {
                     }
                 }
             }
+        }
         stage('Test R7RS Debian') {
             steps {
                 script {
                     env.LIBRARIES.split().each { LIBRARY ->
+                        stage("${LIBRARY}") {
                             env.R7RS_SCHEMES.split().each { SCHEME ->
-                            stage("${SCHEME} ${LIBRARY}") {
+                                stage("${SCHEME}") {
                                     catchError(buildResult: 'SUCCESS', stageResult: 'FAILURE') {
                                         sh "make SCHEME=${SCHEME} LIBRARY=${LIBRARY} RNRS=r7rs test-docker"
                                     }
@@ -63,6 +66,7 @@ pipeline {
                 }
             }
         }
+    }
     post {
         always {
             cleanWs()

Makefile

@@ -5,7 +5,7 @@ LIBRARY=system
 AUTHOR=Retropikzel
 
 SFX=scm
-LIB_PATHS=-I .
+LIB_PATHS=
 ifeq "${RNRS}" "r6rs"
 SFX=sps
 LIB_PATHS=-I .akku/lib

retropikzel/download-file/APT_PACKAGES

@@ -0,0 +1 @@
+libcurl4-openssl-dev

retropikzel/download-file/PACKAGE_ARGS

@@ -0,0 +1 @@
+--foreign-depends curl