Re: Use mkstemp for intermediate ps files (issue 233230044 by address@hidden)

[trueroad]

I've divided and improved the patch.


  Issue 4374 / 1: Fix platform identification

    On Cygwin environment,
    Guile's uname returns the strings of "CYGWIN_NT-6.3" etc.
    It contains unnecessary strings for the platform identification,
    such as Windows version.

    Therefore, to remove them to return the only "cygwin".


  Issue 4374 / 2: Add make-tmpfile procedure

    Procedure "make-tmpfile" is
    to create a unique temporary file using "mkstemp!".


  Issue 4374 / 3: Add copy-binary-file procedure

    Procedure "copy-binary-file" is
    to copy a binary file correctly on any platforms.


  Issue 4374 / 4: Use mkstemp for intermediate ps files

    When backend is `ps' (default),
    intermediate ps files are created by mkstemp.

    The following issues are fixed.

    Filename issue (to compile lines.ly, gs_init.ly etc.)
    Intermediate file issue (to overwrite and delete .ps file)

https://codereview.appspot.com/233230044/