Fixed compilation on gcc 11 and fixed new import paths for dlopen/dlsym/dlcose (#220)

[ko1N]

When trying to compile NativeCore/Unix on my System i encountered this compilation error:

EnumerateRemoteSectionsAndModules.cpp: In function 'void EnumerateRemoteSectionsAndModules(RC_Pointer, void (*)(EnumerateRemoteSectionData*), void (*)(EnumerateRemoteModuleData*))':
EnumerateRemoteSectionsAndModules.cpp:53:29: error: invalid 'static_cast' from type 'std::__cxx11::basic_stringstream<char>' to type 'std::stringstream&' {aka 'std::__cxx11::basic_stringstream<char>&'}
   53 |         std::ifstream input(static_cast<std::stringstream&>(std::stringstream() << "/proc/" << reinterpret_cast<intptr_t>(handle) << "/maps").str());
      |                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Additionally libdl.so is not needed for dlopen/dlsym/dlclose anymore as it was moved in libc. However libc might not be the best choice hence I decided to link it to __Internal which should give better results on more configurations.

[KN4CK3R]

Great thanks!