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.

doc/log/commit_log_v1.1.txt

@@ -1,3 +1,21 @@
+----------------
+Date: 2016-09-24
+Author: Sonny Jeon
+Subject: Serial RX count bug fix. Settings codes CSV. More documentation.
+
+- Reverted back the serial RX count function to how it was. The
+variable type was unsigned and cause an integer underflow whenever the
+calculation produced a negative number. The old way was the correct way.
+
+- Lots of minor edits to the code CSVs and markdown documents.
+
+- Expanded on explaining feedback messages and startup line execution
+feedback.
+
+- Created a new settings codes CSV to help GUIs import the values and
+meanings.
+
+
 ----------------
 Date: 2016-09-22
 Author: Sonny Jeon