Add uint8_t* versions of methods in Stream

The new functions just call their char* equivalents, but this allows
reading bytes into a buffer of uint8_t as well as chars.

cores/arduino/Stream.h

@@ -57,14 +57,18 @@ class Stream : public Print
   void setTimeout(unsigned long timeout);  // sets maximum milliseconds to wait for stream data, default is 1 second
 
   bool find(char *target);   // reads data from the stream until the target string is found
+  bool find(uint8_t *target) { return find ((char *)target); }
   // returns true if target string is found, false if timed out (see setTimeout)
 
   bool find(char *target, size_t length);   // reads data from the stream until the target string of given length is found
+  bool find(uint8_t *target, size_t length) { return find ((char *)target, length); }
   // returns true if target string is found, false if timed out
 
   bool findUntil(char *target, char *terminator);   // as find but search ends if the terminator string is found
+  bool findUntil(uint8_t *target, char *terminator) { return findUntil((char *)target, terminator); }
 
   bool findUntil(char *target, size_t targetLen, char *terminate, size_t termLen);   // as above but search ends if the terminate string is found
+  bool findUntil(uint8_t *target, size_t targetLen, char *terminate, size_t termLen) {return findUntil((char *)target, targetLen, terminate, termLen); }
 
 
   long parseInt(); // returns the first valid (long) integer value from the current position.
@@ -74,10 +78,12 @@ class Stream : public Print
   float parseFloat();               // float version of parseInt
 
   size_t readBytes( char *buffer, size_t length); // read chars from stream into buffer
+  size_t readBytes( uint8_t *buffer, size_t length) { return readBytes((char *)buffer, length); }
   // terminates if length characters have been read or timeout (see setTimeout)
   // returns the number of characters placed in the buffer (0 means no valid data found)
 
   size_t readBytesUntil( char terminator, char *buffer, size_t length); // as readBytes with terminator character
+  size_t readBytesUntil( char terminator, uint8_t *buffer, size_t length) { return readBytesUntil(terminator, (char *)buffer, length); }
   // terminates if length characters have been read, timeout, or if the terminator character  detected
   // returns the number of characters placed in the buffer (0 means no valid data found)