Clean repos and fix clean rule

Move common files to common folder
Move patch files to patch folder
Fix clean rule in Makefile (Remove /Dockerfile in path, he is already there)

Signed-off-by: Bensuperpc <bensuperpc@gmail.com>

common/common.label-and-env

@@ -0,0 +1,14 @@
+# Build-time metadata as defined at http://label-schema.org
+ARG BUILD_DATE
+ARG IMAGE
+ARG VERSION=latest
+ARG VCS_REF
+ARG VCS_URL
+LABEL org.label-schema.build-date=$BUILD_DATE \
+      org.label-schema.name=$IMAGE \
+      org.label-schema.version=$VERSION \
+      org.label-schema.vcs-ref=$VCS_REF \
+      org.label-schema.vcs-url=$VCS_URL \
+      org.label-schema.schema-version="1.0"
+
+ENV DEFAULT_DOCKCROSS_IMAGE ${IMAGE}:${VERSION}