logilab-devtools #6617 behave as good as possible when interrupted with ctrl-c [resolved]

I interrupted lgp build with a ctrl-c and it left a projet-x.y.z in the source tree, which caused it to fail on the following try with messages:

I:logilab.devtools.lgp.build: Use '/home/xxxx/dist/rql-0.20.2.tar.gz' as original source archive (tarball) C:root: No file matching /home/xxxx/dist/rql-0.20.2.tar.gz

Try to get lgp to behave better when interrupted (maybe catch ctrl-c and clean up before exiting).

prioritynormal
typeenhancement
done in0.16.2
load1.000
load left0.000
closed by#dd45ac180d7b Closes #6617: behave as good as possible when interrupted with ctrl-c