Remove stdint.h from the C89 build due to -pedantic warnings from type
  'long long' and constants like UINTPTR_MAX = 18446744073709551615ULL

 This solves the warnings from -Wredundant-decls when overriding the
  OUTPUT function with a function declared in another header.
 It's better this is the non-default option, since using it requires either
  a declaration of the new function OR a preprocessor guard on declaring
  UNITY_OUTPUT_CHAR (as in unity.c here), in every file using the function.
 See Pull Request #185 for more.

 Prevent changes in core Unity from silently breaking Fixture

rearranged project to centralize all self-test stuff under test directory. only pull in includes when required.