Temporarely commented out sftp_handle error handlers.

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>
Removed rpath and family from LD/CXX FLAGS. Linking libssh2 statically for each platform (to avoid additional bogus dependency)

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>