Fix various useful clang-tidy warnings

* bugprone-branch-clone
* bugprone-copy-constructor-init
* bugprone-empty-catch
* bugprone-sizeof-expression
* bugprone-switch-missing-default-case
* bugprone-unused-local-non-trivial-variable
* clang-analyzer-core.uninitialized.Assign
* clang-analyzer-cplusplus.Move
* clang-analyzer-optin.cplusplus.VirtualCall
* modernize-loop-convert
* modernize-raw-string-literal
* modernize-use-equals-default
* modernize-use-override
* modernize-use-using
* performance-avoid-endl
* performance-inefficient-string-concatenation
* performance-inefficient-vector-operation
* performance-noexcept-move-constructor
* performance-unnecessary-value-param (and improve generator example)
* readability-duplicate-include
* readability-inconsistent-declaration-parameter-name
* readability-non-const-parameter
* readability-redundant-casting
* readability-redundant-member-init
* readability-redundant-smartptr-get
* readability-static-accessed-through-instance
* unused variable in amalgamted tests

tests/SelfTest/UsageTests/Tricky.tests.cpp

@@ -261,7 +261,7 @@ TEST_CASE( "non streamable - with conv. op", "[Tricky]" )
 
 inline void foo() {}
 
-typedef void (*fooptr_t)();
+using fooptr_t = void (*)();
 
 TEST_CASE( "Comparing function pointers", "[Tricky][function pointer]" )
 {
@@ -281,7 +281,7 @@ struct S
 
 TEST_CASE( "Comparing member function pointers", "[Tricky][member function pointer][approvals]" )
 {
-    typedef void (S::*MF)();
+    using MF = void (S::*)();
     MF m = &S::f;
 
     CHECK( m == &S::f );