[parrot/parrot] 6635f1: [GH #888] Add a cyg-desparse post-linker step

[GitHub]

  Branch: refs/heads/cyg-desparse-gh888
  Home:   https://github.com/parrot/parrot
  Commit: 6635f1a8cec12b7a478151880ea6083bae82249d
      https://github.com/parrot/parrot/commit/6635f1a8cec12b7a478151880ea6083bae82249d
  Author: Reini Urban <rurban at cpanel.net>
  Date:   2012-12-17 (Mon, 17 Dec 2012)

  Changed paths:
    M config/gen/makefiles/root.in
    A tools/dev/cyg-desparse

  Log Message:
  -----------
  [GH #888] Add a cyg-desparse post-linker step

The cygwin linker up until 1.17.18 creates all its exes and shared libs
as sparse files, which reduces startup time of executables by a large percentage
(8-10x slower) because the code cannot be mmap'ed and not cached, it must be read
byte by byte. Again and again.

See http://cygwin.com/ml/cygwin-developers/2012-12/msg00011.html