Correction for the fix for Bug 3508 - Persistent storage support breaks Linux compatibility.
A 2nd `make install' will fail attempting to create symlink libnvmemmory.so already created by 1st install.
Install should pre-emptively delete it.
#ifndef Py_STRCMP_H
#define Py_STRCMP_H
#ifdef __cplusplus
extern "C" {
#endif
PyAPI_FUNC(int) PyOS_mystrnicmp(const char *, const char *, Py_ssize_t);
PyAPI_FUNC(int) PyOS_mystricmp(const char *, const char *);
#if defined(MS_WINDOWS) || defined(PYOS_OS2)
#define PyOS_strnicmp strnicmp
#define PyOS_stricmp stricmp
#else
#define PyOS_strnicmp PyOS_mystrnicmp
#define PyOS_stricmp PyOS_mystricmp
#endif
#ifdef __cplusplus
}
#endif
#endif /* !Py_STRCMP_H */