Added streflop (standalone reproducible floating point library) layer to mega-glest (initial checkin only) and changed a few areas to use the library in linux

source/shared_lib/sources/streflop/libm/w_expf.c

@@ -0,0 +1,10 @@
+/* The original libm wrapper may call the double implementation
+   and declares double constants.
+   This wrapper purely wraps the float version
+*/
+
+#include "math_private.h"
+
+float __expf(float x) {
+    return __ieee754_expf(x);
+}