[parrot/parrot] ea071d: [config] support __builtin_expect LIKELY/UNLIKELY ...

[GitHub]

  Branch: refs/heads/rurban/expect
  Home:   https://github.com/parrot/parrot
  Commit: ea071dd2e549192b67f2618c17a12a997fbd030f
      https://github.com/parrot/parrot/commit/ea071dd2e549192b67f2618c17a12a997fbd030f
  Author: Reini Urban <rurban at cpanel.net>
  Date:   2014-03-04 (Tue, 04 Mar 2014)

  Changed paths:
    M ChangeLog
    M MANIFEST
    A config/auto/expect.pm
    A config/auto/expect/test_c.in
    M config/auto/neg_0/test_c.in
    M config/gen/config_h/feature_h.in
    M lib/Parrot/Configure/Step/List.pm
    M t/codingstd/c_code_coda.t

  Log Message:
  -----------
  [config] support __builtin_expect LIKELY/UNLIKELY branch optimizations

add EXPECT,LIKELY,UNLIKELY macros to feature.h as in the linux kernel and perl5
probe for __builtin_expect() support in a new auto::expect configure step

Usage: if (UNLIKELY(var == 0)) fail();

Add emacs mode:c support for test_c.in files, and relax the coda test for this.
Should be used in all test_c.in files.