Rename 'altimeter' related files to 'barometer' since GPS and other

sensors handle altitude too - requested by @treymarc

Makefile

@@ -52,7 +52,7 @@ COMMON_SRC	 = startup_stm32f10x_md_gcc.S \
 		   mw.c \
 		   printf.c \
 		   sensors_acceleration.c \
-		   sensors_altitude.c \
+		   sensors_barometer.c \
 		   sensors_compass.c \
 		   sensors_gyro.c \
 		   sensors_initialisation.c \
@@ -91,8 +91,8 @@ NAZE_SRC	 = drivers/accgyro_adxl345.c \
 		   drivers/accgyro_mpu3050.c \
 		   drivers/accgyro_mpu6050.c \
 		   drivers/adc_common.c \
-		   drivers/altimeter_bmp085.c \
+		   drivers/barometer_bmp085.c \
-		   drivers/altimeter_ms5611.c \
+		   drivers/barometer_ms5611.c \
 		   drivers/bus_spi.c \
 		   drivers/compass_hmc5883l.c \
 		   drivers/light_ledring.c \

src/board.h

@@ -19,7 +19,7 @@
 #include "drivers/accgyro_common.h"
 #include "drivers/gpio_common.h"
 #include "drivers/system_common.h"
-#include "drivers/altimeter_common.h"
+#include "drivers/barometer_common.h"
 #include "sensors_common.h"
 #include "axis.h"
 
@@ -62,8 +62,8 @@
 #include "drivers/adc_common.h"
 #include "drivers/accgyro_adxl345.h"
 #include "drivers/accgyro_bma280.h"
-#include "drivers/altimeter_bmp085.h"
+#include "drivers/barometer_bmp085.h"
-#include "drivers/altimeter_ms5611.h"
+#include "drivers/barometer_ms5611.h"
 #include "drivers/compass_hmc5883l.h"
 #include "drivers/bus_i2c.h"
 #include "drivers/bus_spi.h"

src/drivers/barometer_bmp085.c

@@ -3,7 +3,7 @@
 
 #include <platform.h>
 
-#include "altimeter_common.h"
+#include "barometer_common.h"
 
 #include "gpio_common.h"
 #include "system_common.h"

src/drivers/barometer_ms5611.c

@@ -3,7 +3,7 @@
 
 #include <platform.h>
 
-#include "altimeter_common.h"
+#include "barometer_common.h"
 
 #include "gpio_common.h"
 #include "system_common.h"