SECLUDIT: Handle bi-directionnal shutdown
  - Add a second call to SSL_Shutdown (http://www.openssl.org/docs/ssl/SSL_shutdown.html)
SECLUDIT: Handle bi-directionnal shutdown
  - Add a call to SSL_set_shutdown prior SSL_shutdown for performance
Doc: http://www.openssl.org/docs/ssl/SSL_set_shutdown.html
SECLUDIT: Check the consistency of the private key corresponding to the certificate
  - Add a call to SSL_CTX_check_private_key to ensure that the private key is corresponding to the certificate
SECLUDIT: No SSL/TLS Compression specification (disable to avoid SSL/TLS CRIME)
  - Add a profile option to disable SSL compression with default set to disable
  - Add a call to SSL_CTX_set_options() with SSL_OP_NO_COMPRESSION for disabling SSL compression
SECLUDIT: Ensure the PRNG has been seed with enough randomness
  - Check return code of RAND_bytes()
  - Call RAND_poll() upon initialisation
NB: RAND_poll() calls /dev/urandom on unix-like system. If we detect a lack of entropy we can reseed using RAND_load_file() and /dev/random.
Remove libdroplet/srws directory unused
Why these calls to dpl_free() which could do crash the binary (SIGSEGV) ? #11089
If pricing_dir (or droplet_dir) doesn't exists, don't fail dpl_profile_post(), just print a warning - #11089
SSL_CTX_set_default_passwd_cb() must be called before SSL_CTX_set_verify() otherwise the verification of SSL cert with passphrase will fail - #11089
MAX() is already defined on ssync - #11089
#11089
Improve droplet API to support batch delete function - #11086
Support batch delete with AWS S3 - #11086
Fix Droplet Centos 6 compile - #11145
Use bracket to specify explicity ipv6 address - #11146
Support of libssl < 1.0 - #11151
Support of autoconf 2.59 (AC_ECHO is supported from version 2.61) - #11151
check package >= 0.9.0 - #11151
PKG_CHECK_MODULES(CHECK) not available for Centos 5 - #11151
Fix droplet build on Centos 5 and Ubuntu 10 - #11151