[phobos] [D-Programming-Language/phobos] 0bfc7c: remove CC filter for CFLAGS

[GitHub via phobos]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/phobos
  Commit: 0bfc7ca32f074ff4295f567033da4f72b4d377a7
      https://github.com/D-Programming-Language/phobos/commit/0bfc7ca32f074ff4295f567033da4f72b4d377a7
  Author: Martin Nowak <code at dawg.eu>
  Date:   2015-09-06 (Sun, 06 Sep 2015)

  Changed paths:
    M posix.mak

  Log Message:
  -----------
  remove CC filter for CFLAGS

- allows to use compiler wrappers
- fixes make CC=/path/to/cc
- fixes Issue 15012
- still can be overriden with make CFLAGS=


  Commit: 0141997b5437b10572cba01241a0547aaec2fd26
      https://github.com/D-Programming-Language/phobos/commit/0141997b5437b10572cba01241a0547aaec2fd26
  Author: Vladimir Panteleev <github.private at thecybershadow.net>
  Date:   2015-09-06 (Sun, 06 Sep 2015)

  Changed paths:
    M posix.mak

  Log Message:
  -----------
  Merge pull request #3633 from MartinNowak/master

filter on basename of compilers


Compare: https://github.com/D-Programming-Language/phobos/compare/88fc63d8d3d4...0141997b5437