EssentialTypes: Ensure compatibility with C++

This query looks for use of memcmp, but previously it would not have
worked if the user was using C++ and specified std::memcmp.

Although this rule is targeted at C, it is one that a user might enable
for C++ and expect to work.

Author: lcartey

c/misra/src/rules/RULE-21-16/MemcmpOnInappropriateEssentialTypeArgs.ql

@@ -20,7 +20,7 @@ import codingstandards.c.misra.EssentialTypes
 from FunctionCall memcmp, Expr arg, Type argBaseType
 where
   not isExcluded(arg, EssentialTypesPackage::memcmpOnInappropriateEssentialTypeArgsQuery()) and
-  memcmp.getTarget().hasGlobalName("memcmp") and
+  memcmp.getTarget().hasGlobalOrStdName("memcmp") and
   // Pointer arguments
   arg = memcmp.getArgument([0, 1]) and
   exists(DerivedType pt |