[sql] Import SQLite 3.17.0.

third_party/sqlite/src/src/test_windirent.h

 /*
 ** 2015 November 30
 **
 ** The author disclaims copyright to this source code.  In place of
 ** a legal notice, here is a blessing:
 **
 **    May you do good and not evil.
 **    May you find forgiveness for yourself and forgive others.
 **    May you share freely, never taking more than you give.
 **
@@ skipping 75 matching lines @@
   char d_name[NAME_MAX + 1]; /* Name within the directory. */
 };
 
 struct DIR {
   intptr_t d_handle; /* Value returned by "_findfirst". */
   DIRENT d_first;    /* DIRENT constructed based on "_findfirst". */
   DIRENT d_next;     /* DIRENT constructed based on "_findnext". */
 };
 
 /*
+** Provide a macro, for use by the implementation, to determine if a
+** particular directory entry should be skipped over when searching for
+** the next directory entry that should be returned by the readdir() or
+** readdir_r() functions.
+*/
+
+#ifndef is_filtered
+#  define is_filtered(a) ((((a).attrib)&_A_HIDDEN) || (((a).attrib)&_A_SYSTEM))
+#endif
+
+/*
+** Provide the function prototype for the POSIX compatiable getenv()
+** function.  This function is not thread-safe.
+*/
+
+extern const char *windirent_getenv(const char *name);
+
+/*
 ** Finally, we can provide the function prototypes for the opendir(),
 ** readdir(), readdir_r(), and closedir() POSIX functions.
 */
 
 extern LPDIR opendir(const char *dirname);
 extern LPDIRENT readdir(LPDIR dirp);
 extern INT readdir_r(LPDIR dirp, LPDIRENT entry, LPDIRENT *result);
 extern INT closedir(LPDIR dirp);
 
 #endif /* defined(WIN32) && defined(_MSC_VER) */