Compiles against mbed OS 5

Fork of Adafruit_GFX_1351 by Tisham Dhar

Revision:
20:a42316f33f7c
Parent:
17:0a4bb1070fd5
--- a/Adafruit_GFX.h	Fri Aug 19 02:22:03 2016 +0000
+++ b/Adafruit_GFX.h	Thu Aug 25 12:31:43 2016 +0000
@@ -22,7 +22,7 @@
 
 #include "Adafruit_GFX_Config.h"
 
-static inline void swap(int16_t &a, int16_t &b)
+static inline void SWAP(int16_t &a, int16_t &b)
 {
     int16_t t = a;