Revert "Merge pull request #217 from shaitan/trace"

This reverts commit 47c328c2bbeee65350ffca5e1a62c0348ad045cf, reversing
changes made to 5f0d34a28f7e66666770a46e1aa6f2927ed22e7b.
Put/complete stalled/timedout transactions on error not under state_lock.
Get rid of libelliptics_module_backend_cpp.so in elliptics spec
v2.24.14.5