Addressed much larger flash size with avr-gcc v4.9.2. Refactored reports to save 160KB.

- The newest Arduino IDE 1.6.12 has recently updated to avr-gcc v4.9.2.
Unfortunately, it produces a compiled size almost 0.7KB to 1KB larger
than prior versions! This can easily cause the base build to exceed the
Arduino Duemilanove/Nano flash limit of 30.5KB. The Arduino Uno seems
to be ok still with its 31.5KB flash limit.

- Makefile `-flto` compile flag added to cut down on the horrible flash
size when using the new avr-gcc. (Edit Makefile and remove comment on
COMPILE definition). This brings it in-line with what the IDE produces.

- Functionalized repetitive tasks in report.c to try to reduce overall
flash size. Successfully cut down about 160bytes.

- Removed printFloat_SettingValue() and printFloat_RPMValue()
functions. These aren’t required and can be replaced with a direct call
to printFloat() because they don’t require a unit conversion check.

Makefile

@@ -42,8 +42,14 @@ FUSES      = -U hfuse:w:0xd2:m -U lfuse:w:0xff:m
 # Tune the lines below only if you know what you are doing:
 
 AVRDUDE = avrdude $(PROGRAMMER) -p $(DEVICE) -B 10 -F
+
+# Compile flags for avr-gcc v4.8.1. Does not produce -flto warnings.
 COMPILE = avr-gcc -Wall -Os -DF_CPU=$(CLOCK) -mmcu=$(DEVICE) -I. -ffunction-sections
 
+# Compile flags for avr-gcc v4.9.2 compatible with the IDE. Or if you don't care about the warnings. 
+# COMPILE = avr-gcc -Wall -Os -DF_CPU=$(CLOCK) -mmcu=$(DEVICE) -I. -ffunction-sections -flto
+
+
 OBJECTS = $(addprefix $(BUILDDIR)/,$(notdir $(SOURCE:.c=.o)))
 
 # symbolic targets: