Unity prints float (and double) by default

Fix new type name conflicts

Conflicts:
	src/unity.c
	src/unity_internals.h

Module generator finishes for partially existing files

This resolves #219. When generating a new module, if all the files to
generate already exist then it fails as before. If some of the files
already exist, then the files that need to be created are created. Any
existing files are not changed.

Also added a bunch of tests for this feature via rspec. Run them from
the test folder with `rake spec`.

Revised internal type naming scheme to better sandbox Unity away from everything else. Sure, short was nice, but not at the expense of naming collisions.

Fixed error when path provided in module name.

- configurable case.
- better passing of includes and boilerplate information
- test only pattern
- optional naming conventions for case

Takes about 10 minutes to run all floats, so split into 3 tests for parallel
running later. This was useful during development for finding hard corner cases
and getting the routine to high quality. Off by default.
Note that all floats 16.0 and up can be represented uniquely (in this format) and will
round-trip back to the exact same float with sscanf(). This property is true for
UnityPrintFloat, despite a few rounding error cases, it will produce output identity.

Better comments and refactor on round ties to even
Add upper threshold value on round to even feature since numerical precision issues
start to give approximations when dividing one large double by another. When tested
on float values, using 1e22 gave the fewest rounding errors.

Fix warnings from gcc. Some float constants do not behave well in existing tests.
Add casts where conversions could be imprecise.

Move double tests down in the file

Remove UNITY_FLOAT_VERBOSE entirely, add option UNITY_EXCLUDE_FLOAT_PRINT
Remove some questionable float casts from doubles
Default to Round Ties to Even behavior, add option to Round Ties Away from Zero

Linux gcc & clang and OSX clang produce output with ties round to even
Windows mingw gcc does not
Example 0.0078125 prints '0.007812'

Change some types to signed for simpler code and speed
Added format to distinguish small numbers

Print 9 digits

Delete old method for printing

Improve printing six decimal places, remove trailing 0's, fix the carry when
numbers like 0.9999999 round up and print leading zeros in the decimal

The first attempt at printing floats had precision issues where the last few
digits would often be wrong. This next approach may yield a better algorithm
for numbers less than 4.29 billion, those that fit in 32 bits.

removed duplicated declaration of putcharSpy

We can’t guarantee that the built-in function insane will return 1. It might return any other non-negative value. Therefore we need to force it to be 1 so we can use the comparison operator later.

 Generalize loop to print decimal format and exponential
 Add '+' to exponent when printing larger floats

Added ability to inject defines, much like what was built into Ceedling before Ceedling switched to just using this generator.

refactor generate_module so that it can be called as a class from within Ceedling (much like the test runner generator)

Remove extra newline in verbose output format of Fixture

Add option to set NaN not equal NaN for floating point assertions

Fix bug, makefiles for example do not clean on windows

check 'i' limit before using it as an array index.

fix cppcheck "Array index 'i' is used before limits check."

Fix fixture using from C++ sources

Mangling issues, as always.