Fixups for Wire library builds.

Makefile

@@ -15,6 +15,7 @@ BUILD_PATH = build
 LIBMAPLE_PATH := $(SRCROOT)/libmaple
 WIRISH_PATH := $(SRCROOT)/wirish
 SUPPORT_PATH := $(SRCROOT)/support
+LIBRARIES_PATH := $(SRCROOT)/libraries
 # Support files for linker
 LDDIR := $(SUPPORT_PATH)/ld
 # Support files for this Makefile
@@ -52,6 +53,7 @@ include $(MAKEDIR)/build-templates.mk
 # It slows compilation noticeably; remove after 1 release.
 TARGET_FLAGS    += -I$(LIBMAPLE_PATH)/include/libmaple                       \
                    -I$(WIRISH_PATH)/include/wirish
+TARGET_FLAGS += -I$(LIBRARIES_PATH) # for internal lib. includes, e.g. <Wire/WireBase.h>
 GLOBAL_CFLAGS   := -Os -g3 -gdwarf-2 -nostdlib \
                    -ffunction-sections -fdata-sections \
 		   -Wl,--gc-sections $(TARGET_FLAGS)

libraries/Wire/HardWire.cpp

@@ -36,7 +36,7 @@
  * users easy interaction with the I2C Hardware in a familiar method.
  */
 
-#include "HardWire.h"
+#include <Wire/HardWire.h>
 
 uint8 HardWire::process() {
     int8 res = i2c_master_xfer(sel_hard, &itc_msg, 1, 0);

libraries/Wire/HardWire.h

@@ -39,7 +39,7 @@
 #ifndef _HARDWIRE_H_
 #define _HARDWIRE_H_
 
-#include "WireBase.h"
+#include <Wire/WireBase.h>
 #include <wirish/wirish.h>
 #include <libmaple/i2c.h>
 

libraries/Wire/Wire.cpp

@@ -37,7 +37,7 @@
  * modifications by gke and ala42.
  */
 
-#include "Wire.h"
+#include <Wire/Wire.h>
 
 #define I2C_WRITE 0
 #define I2C_READ  1
@@ -179,4 +179,4 @@ TwoWire::~TwoWire() {
 }
 
 // Declare the instance that the users of the library can use
-TwoWire Wire();
+TwoWire Wire(SCL, SDA, SOFT_STANDARD);

libraries/Wire/Wire.h

@@ -40,7 +40,7 @@
 #ifndef _WIRE_H_
 #define _WIRE_H_
 
-#include "WireBase.h"
+#include <Wire/WireBase.h>
 #include <wirish/wirish.h>
 
 /*
@@ -116,7 +116,7 @@ class TwoWire : public WireBase {
      * Accept pin numbers for SCL and SDA lines. Set the delay needed
      * to create the timing for I2C's Standard Mode and Fast Mode.
      */
-    TwoWire(uint8 = SCL, uint8 = SDA, uint8 = SOFT_STANDARD);
+    TwoWire(uint8 scl=SCL, uint8 sda=SDA, uint8 delay=SOFT_STANDARD);
 
     /*
      * Sets pins SDA and SCL to OUPTUT_OPEN_DRAIN, joining I2C bus as
@@ -131,6 +131,6 @@ class TwoWire : public WireBase {
     ~TwoWire();
 };
 
-extern TwoWire Wire();
+extern TwoWire Wire;
 
 #endif // _WIRE_H_

libraries/Wire/WireBase.cpp

@@ -38,7 +38,7 @@
  * whether it is I2C hardware or emulating software.
  */
 
-#include "WireBase.h"
+#include <Wire/WireBase.h>
 #include <wirish/wirish.h>
 
 void WireBase::begin(uint8 self_addr) {