Fixes #118: unity_output_Spy should use the platform-agnostic macros for memory.

Fixes issues #3 and #116 (Thanks!)

Fixes #116: Allow overrides of the Unity Fixture's memory functions. This enables custom heap implementations to be used with the Unity Fixture.

Fixes #3: unity_fixture tests don't build. unity.c and unity_fixture_malloc_overrides.h neglected to include <stddef.h> even though the reference 'size_t' and 'NULL'.

Avoid warnings when casting pointers in array comparisons (dancing between warnings)

    - casting to a (void*) was giving warnings to some compilers about double casting
    - casting from a u8 to u16/32/64 was giving warnings about changing alignment requirements

New asserter: TEST_ASSERT_EQUAL_STRING_LEN

Reverting of redundant castings, Fixed -Wcast-qual warnings

Double castings look ugly. And if Unity is compiled with -Wcast-qual flag these type castings produce a lot of warnings:
unity/src/unity.c:490:80: warning: cast discards ‘__attribute__((const))’ qualifier from pointer target type [-Wcast-qual]
                     UnityPrintNumberByStyle(*(UNITY_PTR_ATTRIBUTE const _US16*)(void*)ptr_exp, style);
                                                                                ^

Compares two strings until maximum n bytes (i.e. strncmp()).

Added break out of system vs local includes for enhanced include-based dependency extraction to aid new cmock Make task/build generation.
Bumber build and version info since new external capability added for querying includes.

Added type_sanitizer.rb to consolidate converting a string to a valid C identifier, which will allow CMock and Ceedling to use the same construct which is currently duplicated in each repo.

Add a port of unity_test_summary.rb to Python (Thanks so much! I'm sure people will find this useful)

Useful in environments without access to ruby

Added "const" to one argv parameter that was missed when adding strict error checks. (thanks, trianglee!)

Move announceTestRun() after UnityBegin()

undef defined callc/realloc macros

Make Unity's compilation flags stricter

Primarily -
* Added "static" to static functions.
* Added proper signature with "void" to functions without arguments.
* Marked unused arguments with "(void)".
* Removed entirely unused static functions.
* Added "const" to preserve const-correctness.
* Added function prototypes for external functions.

New macros for controlling use of weak linkage (Thanks Zane!)

 - `UNITY_WEAK_ATTRIBUTE`, if defined, is placed before declarations of weakly
   linked symbols. If not manually defined, it will be automatically set to
   `__attribute__((weak))` on GCC and Clang, except for Clang for Win32.
 - `UNITY_WEAK_PRAGMA`, if defined, will cause preprocessor to emit
   `#pragma weak setUp`, etc. Ignored if `UNITY_WEAK_ATTRIBUTE` is defined.
 - `UNITY_NO_WEAK` undefines both of the above resulting in no weakly
   linked symbols.

Work around for ThrowTheSwitch/Unity#93

Warning fixes (thanks kotofos!)

no arguments for UnityPointer_Init (thanks Kotofos) 

Print newline after each test, but not before (Thanks Zane)