WIN32 specific Blacklisted libraries check:

1) Polished up wording of the error messages.
2) Made some messages in the SysInfo dialog localized.
3) Renamed LibraryCheck.cpp/hpp to BlacklistedLibraryCheck.cpp/hpp
4) CPPized the BlacklistedLibraryCheck WIN32 C code.

src/libslic3r/LibraryCheck.hpp

@@ -1,45 +0,0 @@
-#ifndef slic3r_LibraryCheck_hpp_
-#define slic3r_LibraryCheck_hpp_
-
-#ifdef  WIN32
-#include <windows.h>
-#include <vector>
-#include <string>
-#endif //WIN32
-
-namespace Slic3r {
-
-#ifdef  WIN32
-class LibraryCheck
-{
-public:
-    static LibraryCheck& get_instance()
-    {
-        static LibraryCheck instance; 
-                              
-        return instance;
-    }
-private:
-    LibraryCheck() {}
-
-    std::vector<std::wstring> m_found;
-public:
-    LibraryCheck(LibraryCheck const&) = delete;
-    void operator=(LibraryCheck const&) = delete;
-    // returns all found blacklisted dlls
-    bool get_blacklisted(std::vector<std::wstring>& names);
-    std::wstring get_blacklisted_string();
-    // returns true if enumerating found blacklisted dll
-    bool perform_check();
-
-    static bool is_blacklisted(std::string  dllpath);
-    static bool is_blacklisted(std::wstring dllpath);
-private:
-    static const std::vector<std::wstring> blacklist;
-};
-
-#endif //WIN32
-
-} // namespace Slic3r
-
-#endif //slic3r_LibraryCheck_hpp_