Fix libtdekrb FTBFS on older Ubuntu versions

lib/libtdekrb/src/tdekrbclientsocket.cpp

@@ -34,6 +34,10 @@
 
 #include "tdekrbclientsocket.h"
 
+#if SASL_VERSION_FULL < 0x020119
+typedef int (*sasl_callback_ft)(void);
+#endif // SASL_VERSION_FULL
+
 #define NET_SEC_BUF_SIZE (2048)
 
 // When control comes back from processEvents() my object may be completely gone!  This attempts to mitigate the risk

lib/libtdekrb/src/tdekrbserversocket.cpp

@@ -34,6 +34,10 @@
 
 #include "tdekrbserversocket.h"
 
+#if SASL_VERSION_FULL < 0x020119
+typedef int (*sasl_callback_ft)(void);
+#endif // SASL_VERSION_FULL
+
 #define NET_SEC_BUF_SIZE (2048)
 
 // When control comes back from processEvents() my object may be completely gone!  This attempts to mitigate the risk