- added boolean function ssl_private_key_is_encrypted() - removed some dead code - check for EVP_R_NO_SIGN_FUNCTION_CONFIGURED in addition to   EVP_R_BAD_ENCRYPT as error on bad passphrase - reset _ssl_pass_phrase to NULL after use
- added boolean function ssl_private_key_is_encrypted()
- removed some dead code
- check for EVP_R_NO_SIGN_FUNCTION_CONFIGURED in addition to
  EVP_R_BAD_ENCRYPT as error on bad passphrase
- reset _ssl_pass_phrase to NULL after use

gridcf/gct,ellert/globus-toolkit,gridcf/gct,ellert/globus-toolkit,gridcf/gct,ellert/globus-toolkit,globus/globus-toolkit,gridcf/gct,ellert/globus-toolkit,globus/globus-toolkit,globus/globus-toolkit,globus/globus-toolkit,gridcf/gct,gridcf/gct,ellert/globus-toolkit,ellert/globus-toolkit,globus/globus-toolkit,globus/globus-toolkit,globus/globus-toolkit,globus/globus-toolkit,ellert/globus-toolkit,ellert/globus-toolkit