Declarations1: add inline notes to RULE-5-1 and RULE-5-4 for standards considered

Author: knewbury01

c/misra/src/rules/RULE-5-1/ExternalIdentifiersNotDistinct.ql

@@ -33,6 +33,9 @@ from ExternalIdentifiers d, ExternalIdentifiers d2
 where
   not isExcluded(d, Declarations1Package::externalIdentifiersNotDistinctQuery()) and
   notSame(d, d2) and
+  //C99 states the first 31 characters of external identifiers are significant
+  //C90 states the first 6 characters of external identifiers are significant and case is not required to be significant
+  //C90 is not currently considered by this rule
   if d instanceof ExternalIdentifiersLong and d2 instanceof ExternalIdentifiersLong
   then d.getName().substring(0, 30) = d2.getName().substring(0, 30)
   else d.getName() = d2.getName()

c/misra/src/rules/RULE-5-4/MacroIdentifiersNotDistinct.ql

@@ -20,6 +20,10 @@ where
   not isExcluded(m, Declarations1Package::macroIdentifiersNotDistinctQuery()) and
   not m = m2 and
   (
+    //C99 states the first 63 characters of macro identifiers are significant
+    //C90 states the first 31 characters of macro identifiers are significant and is not currently considered by this rule
+    //ie an identifier differing on the 32nd character would be indistinct for C90 but distinct for C99
+    //and is currently not reported by this rule
     if m.getName().length() >= 64
     then m.getName().substring(0, 62) = m2.getName().substring(0, 62)
     else m.getName() = m2.getName()