update so that upon checkout all shell scripts are made executable (not just bootstrap.sh)
update so that upon checkout all shell scripts are made executable (not just bootstrap.sh)


Former-commit-id: 3ac8d798ec64a88138ef00c777c91124776b9e0f
bfg-repo-cleaner-demos/eclipselink.runtime-bfg-strip-big-blobs,bfg-repo-cleaner-demos/eclipselink.runtime-bfg-strip-big-blobs,bfg-repo-cleaner-demos/eclipselink.runtime-bfg-strip-big-blobs