Bridge: Increased timeout when receiving "lenght" field.

Fixes a weird timing issue:
http://forum.arduino.cc/index.php?topic=188955.0

Author: cmaglie

build/shared/revisions.txt

@@ -3,6 +3,7 @@ ARDUINO 1.5.5 BETA
 
 [libraries]
 * avr: Fixed buffer overflow in File::doBuffer() (dreggy)
+* avr: Fixed timeout in Bridge::transfer()
 
 ARDUINO 1.5.4 BETA 2013.09.10
 

libraries/Bridge/src/Bridge.cpp

@@ -158,11 +158,11 @@ uint16_t BridgeClass::transfer(const uint8_t *buff1, uint16_t len1,
     crcUpdate(index);
 
     // Recv len
-    int lh = timedRead(5);
+    int lh = timedRead(10);
     if (lh < 0)
       continue;
     crcUpdate(lh);
-    int ll = timedRead(5);
+    int ll = timedRead(10);
     if (ll < 0)
       continue;
     crcUpdate(ll);