- put back wmksize(), wmkrange() and wmkpoint() as functions instead of macros

- fixed some compilation warnings with -Wall
- some code cleanup

wrlib/rotate.c

@@ -30,7 +30,7 @@
 #include <math.h>
 
 #ifndef PI
-#define PI 3.141592654
+#define PI 3.14159265358979323846
 #endif