Bugfix/fix splint warnings (#250)

* Fix SPLINT to perform static defect analysis

Fix the SPLINT invocation in Makefile
Fix C files where SPLINT detected problems.
Remove UCIX check from SPLINT
Use SPLINT friendly parsing code disable for bacsec

Co-authored-by: Steve Karg <skarg@users.sourceforge.net>

src/bacnet/basic/object/msv.c

@@ -372,7 +372,7 @@ bool Multistate_Value_Encode_Value_List(
     const bool fault = false;
     const bool overridden = false;
     bool out_of_service = false;
-    uint32_t present_value = 0.0;
+    uint32_t present_value = 0;
     unsigned index = 0;
 
     index = Multistate_Value_Instance_To_Index(object_instance);