Copy also *.tar.xz files. Debian source packages can be generated also on Debian 8/jessie now.
Properly handle EINTR, the first part of the issue #5.
Warnings: unused stuff when compiling without globus.
Test for handling EINTR during edg_wll_gss_connect(), helper test core module.
Update glite_gss test - using helper test module, distinguish user and server credentials.
Cleanup slave processes in test_gss.