bug#20043: libcap: Dangling .so references

[Taylan Ulrich Bayırlı/Kammer]

(See the first "Dangling .so references" bug report for more
information.)

/gnu/store/3knv9nrzpq50yjl9711p6ivjjpr3493h-libcap-2.22/

  /gnu/store/3knv9nrzpq50yjl9711p6ivjjpr3493h-libcap-2.22/sbin/getpcaps
        libcap.so.2 => not found
  /gnu/store/3knv9nrzpq50yjl9711p6ivjjpr3493h-libcap-2.22/sbin/setcap
        libcap.so.2 => not found
  /gnu/store/3knv9nrzpq50yjl9711p6ivjjpr3493h-libcap-2.22/sbin/getcap
        libcap.so.2 => not found
  /gnu/store/3knv9nrzpq50yjl9711p6ivjjpr3493h-libcap-2.22/sbin/capsh
        libcap.so.2 => not found