Update version string to prepare for 4.9.1 release.
#define MOD_WSGI_MAJORVERSION_NUMBER 4
#define MOD_WSGI_MINORVERSION_NUMBER 9
#define MOD_WSGI_MICROVERSION_NUMBER 1
-#define MOD_WSGI_VERSION_STRING "4.9.1.dev1"
+#define MOD_WSGI_VERSION_STRING "4.9.1"
/* ------------------------------------------------------------------------- */
