mesa: remove powf macro

Use the wrapper in c99_math.h if needed.

Reviewed-by: Matt Turner <mattst88@gmail.com>

src/mesa/main/imports.h

@@ -102,7 +102,6 @@ typedef union { GLfloat f; GLint i; GLuint u; } fi_type;
 #define floorf(f) ((float) floor(f))
 #define logf(f) ((float) log(f))
 
-#define powf(x,y) ((float) pow(x,y))
 #define sqrtf(f) ((float) sqrt(f))
 #endif
 

src/mesa/main/light.c

@@ -24,6 +24,7 @@
  */
 
 
+#include "c99_math.h"
 #include "glheader.h"
 #include "imports.h"
 #include "context.h"

src/mesa/tnl/t_rasterpos.c

@@ -23,6 +23,7 @@
  */
 
 
+#include "c99_math.h"
 #include "main/glheader.h"
 #include "main/colormac.h"
 #include "main/feedback.h"

src/mesa/tnl/t_vb_light.c

@@ -23,7 +23,7 @@
  */
 
 
-
+#include "c99_math.h"
 #include "main/glheader.h"
 #include "main/colormac.h"
 #include "main/light.h"