Added libssh2 version definitions

Author: Pan

ssh2/ssh2.c

@@ -22,9 +22,9 @@ cdef extern from "libssh2.h" nogil:
     enum:
         _LIBSSH2_SESSION_BLOCK_INBOUND "LIBSSH2_SESSION_BLOCK_INBOUND"
         _LIBSSH2_SESSION_BLOCK_OUTBOUND "LIBSSH2_SESSION_BLOCK_OUTBOUND"
-        LIBSSH2_VERSION_MAJOR
-        LIBSSH2_VERSION_MINOR
-        LIBSSH2_VERSION_PATCH
+        _LIBSSH2_VERSION_MAJOR "LIBSSH2_VERSION_MAJOR"
+        _LIBSSH2_VERSION_MINOR "LIBSSH2_VERSION_MINOR"
+        _LIBSSH2_VERSION_PATCH "LIBSSH2_VERSION_PATCH"
     ctypedef long long libssh2_int64_t
     ctypedef struct stat
     ctypedef struct libssh2_struct_stat
@@ -138,7 +138,6 @@ cdef extern from "libssh2.h" nogil:
         const char *privatekey,
         const char *passphrase,
         const char *hostname)
-    # IF LIBSSH2_VERSION_MAJOR >= and LIBSSH2_VERSION_MINOR >= 5:
     int libssh2_userauth_publickey_frommemory(
         LIBSSH2_SESSION *session,
         const char *username,

ssh2/ssh2.pxd

@@ -30,8 +30,8 @@ LIBSSH2CHANNEL_EAGAIN = error_codes._LIBSSH2CHANNEL_EAGAIN
 LIBSSH2_ERROR_EAGAIN = error_codes._LIBSSH2_ERROR_EAGAIN
 LIBSSH2_ERROR_AUTHENTICATION_FAILED = error_codes._LIBSSH2_ERROR_AUTHENTICATION_FAILED
 LIBSSH2_ERROR_SOCKET_RECV = error_codes._LIBSSH2_ERROR_SOCKET_RECV
-LIBSSH2_SESSION_BLOCK_INBOUND = _LIBSSH2_SESSION_BLOCK_INBOUND
-LIBSSH2_SESSION_BLOCK_OUTBOUND = _LIBSSH2_SESSION_BLOCK_OUTBOUND
+LIBSSH2_SESSION_BLOCK_INBOUND = ssh2._LIBSSH2_SESSION_BLOCK_INBOUND
+LIBSSH2_SESSION_BLOCK_OUTBOUND = ssh2._LIBSSH2_SESSION_BLOCK_OUTBOUND
 
 
 cdef class AgentError(Exception):