Partially revert "Removing useless includes from examples"

This allows example to continue to work with older IDE.

This partially reverts commit 46cb5f0a5c.

libraries/SD/examples/CardInfo/CardInfo.ino

@@ -20,6 +20,7 @@
  by Tom Igoe
  */
 // include the SD library:
+#include <SPI.h>
 #include <SD.h>
 
 // set up variables using the SD utility library functions:

libraries/SD/examples/Datalogger/Datalogger.ino

@@ -20,6 +20,7 @@
 
  */
 
+#include <SPI.h>
 #include <SD.h>
 
 const int chipSelect = 4;

libraries/SD/examples/DumpFile/DumpFile.ino

@@ -20,6 +20,7 @@
 
  */
 
+#include <SPI.h>
 #include <SD.h>
 
 const int chipSelect = 4;

libraries/SD/examples/Files/Files.ino

@@ -17,6 +17,7 @@
  This example code is in the public domain.
 
  */
+#include <SPI.h>
 #include <SD.h>
 
 File myFile;

libraries/SD/examples/ReadWrite/ReadWrite.ino

@@ -18,6 +18,7 @@
 
  */
 
+#include <SPI.h>
 #include <SD.h>
 
 File myFile;

libraries/SD/examples/listfiles/listfiles.ino

@@ -21,6 +21,7 @@
  This example code is in the public domain.
 
  */
+#include <SPI.h>
 #include <SD.h>
 
 File root;

libraries/TFT/examples/Arduino/TFTBitmapLogo/TFTBitmapLogo.ino

@@ -20,6 +20,7 @@
  */
 
 // include the necessary libraries
+#include <SPI.h>
 #include <SD.h>
 #include <TFT.h>  // Arduino LCD library
 

libraries/TFT/examples/Arduino/TFTColorPicker/TFTColorPicker.ino

@@ -25,6 +25,7 @@
 // #define rst  1
 
 #include <TFT.h>  // Arduino LCD library
+#include <SPI.h>
 
 TFT TFTscreen = TFT(cs, dc, rst);
 

libraries/TFT/examples/Arduino/TFTDisplayText/TFTDisplayText.ino

@@ -16,6 +16,7 @@
  */
 
 #include <TFT.h>  // Arduino LCD library
+#include <SPI.h>
 
 // pin definition for the Uno
 #define cs   10

libraries/TFT/examples/Arduino/TFTEtchASketch/TFTEtchASketch.ino

@@ -15,6 +15,7 @@
  */
 
 #include <TFT.h>  // Arduino LCD library
+#include <SPI.h>
 
 // pin definition for the Uno
 #define cs   10

libraries/TFT/examples/Arduino/TFTGraph/TFTGraph.ino

@@ -15,6 +15,7 @@
  */
 
 #include <TFT.h>  // Arduino LCD library
+#include <SPI.h>
 
 // pin definition for the Uno
 #define cs   10

libraries/TFT/examples/Arduino/TFTPong/TFTPong.ino

@@ -17,6 +17,7 @@
  */
 
 #include <TFT.h>  // Arduino LCD library
+#include <SPI.h>
 
 // pin definition for the Uno
 #define cs   10

libraries/TFT/examples/Esplora/EsploraTFTBitmapLogo/EsploraTFTBitmapLogo.ino

@@ -23,6 +23,7 @@
 
 // include the necessary libraries
 #include <Esplora.h>
+#include <SPI.h>
 #include <SD.h>
 #include <TFT.h>            // Arduino LCD library
 

libraries/TFT/examples/Esplora/EsploraTFTColorPicker/EsploraTFTColorPicker.ino

@@ -16,6 +16,7 @@
 
 #include <Esplora.h>
 #include <TFT.h>  // Arduino LCD library
+#include <SPI.h>
 
 void setup() {
   Serial.begin(9600);

libraries/TFT/examples/Esplora/EsploraTFTEtchASketch/EsploraTFTEtchASketch.ino

@@ -17,6 +17,7 @@
 
 #include <Esplora.h>
 #include <TFT.h>  // Arduino LCD library
+#include <SPI.h>
 
 // initial position of the cursor
 int xPos = EsploraTFT.width() / 2;

libraries/TFT/examples/Esplora/EsploraTFTGraph/EsploraTFTGraph.ino

@@ -16,6 +16,7 @@
 
 #include <Esplora.h>
 #include <TFT.h>  // Arduino LCD library
+#include <SPI.h>
 
 // position of the line on screen
 int xPos = 0;

libraries/TFT/examples/Esplora/EsploraTFTHorizon/EsploraTFTHorizon.ino

@@ -16,6 +16,7 @@
 
 #include <Esplora.h>
 #include <TFT.h>            // Arduino LCD library
+#include <SPI.h>
 
 // horizontal start and end positions
 int yStart = EsploraTFT.height() / 2;

libraries/TFT/examples/Esplora/EsploraTFTPong/EsploraTFTPong.ino

@@ -19,6 +19,7 @@
 
 #include <Esplora.h>
 #include <TFT.h>            // Arduino LCD library
+#include <SPI.h>
 
 // variables for the position of the ball and paddle
 int paddleX = 0;

libraries/TFT/examples/Esplora/EsploraTFTTemp/EsploraTFTTemp.ino

@@ -20,6 +20,7 @@
 // include the necessary libraries
 #include <Esplora.h>
 #include <TFT.h>            // Arduino LCD library
+#include <SPI.h>
 
 char tempPrintout[3];  // array to hold the temperature data