Oops, forgot to export PETITCOMPILER_DATA_DIRECTORY variable
...so Smalltalk code could not read it. Also fixed test for "include" scripts
so they are not downloaded again when already downloaded.
syntax: glob
*Init.c
makefile
*.so
*.H
*.o
*.STH
*.sc
objbc
objvc
*.class
java/libs/*.jar
java/libs-src/*.jar
*-Test.xml
st.chg
package-cache
mc
# CI Artefacts
ci/package-cache
ci/pharo*
ci/test-data
ci/*.image
ci/*.changes
ci/*.fuel
ci/*.json
ci/*.xml
ci/*.log