Get rid of constructors mechanism inside clib4

[afxgroup]

At moment clib4 use the same mechanism of clib2 to initialize the internal structures and libraries.

For example memory allocator has its own constructor (and destructor) to initialize all it needs to work correctly.

The constructors (and destructors) are executed inside _main function when exe file is loaded.

However if try to compile a program that has no main() function but for example _start() the constructors are not called and so the program crash.

We need to replace the constructors and destructors and move everything inside libOpen/libClose (or any suitable place).