m4 ChangeLog NEWS configure.ac checks/check-the... [branch-1_4]

[Eric Blake]

CVSROOT:        /sources/m4
Module name:    m4
Branch:         branch-1_4
Changes by:     Eric Blake <ericb>      06/06/30 15:06:54

Modified files:
        .              : ChangeLog NEWS configure.ac 
        checks         : check-them 
        doc            : m4.texinfo 
        src            : builtin.c freeze.c m4.h 

Log message:
        * src/m4.h (UNIX, W32_NATIVE): Improve platform detection macros.
        * src/freeze.c (produce_frozen_state): Use new spelling of
        platform macro.
        * src/builtin.c (predefined_tab): Add __windows__ on non-unix
        platforms.
        (m4_syscmd, m4_esyscmd): The empty command is successful.
        * doc/m4.texinfo (Shell commands): Rename from UNIX commands.
        Document platform-dependence of system().
        (Syscmd): Add example.
        (Esyscmd): Make example more robust, and actually demonstrate
        rescanning.
        (Sysval): Expand test to cover esyscmd code path, and to check
        that empty command is successful.  Add conditional check for
        signal behavior.
        (Other Incompatibilities): Move platform macros from here...
        (Platform macros): ...to this new node.  Add windows macro.
        Check that exactly one platform macro is provided.
        * checks/check-them: Improve trap cleanup.  Tolerate dirname and
        .exe in error messages.  Allow for skipping checks.
        * configure.ac (HAVE_EFGCVT): Kill dead configure check.
        * NEWS: Document platform macros.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/m4/ChangeLog?cvsroot=m4&only_with_tag=branch-1_4&r1=1.1.1.1.2.90&r2=1.1.1.1.2.91
http://cvs.savannah.gnu.org/viewcvs/m4/NEWS?cvsroot=m4&only_with_tag=branch-1_4&r1=1.1.1.1.2.27&r2=1.1.1.1.2.28
http://cvs.savannah.gnu.org/viewcvs/m4/configure.ac?cvsroot=m4&only_with_tag=branch-1_4&r1=1.36.2.18&r2=1.36.2.19
http://cvs.savannah.gnu.org/viewcvs/m4/checks/check-them?cvsroot=m4&only_with_tag=branch-1_4&r1=1.1.1.1.2.2&r2=1.1.1.1.2.3
http://cvs.savannah.gnu.org/viewcvs/m4/doc/m4.texinfo?cvsroot=m4&only_with_tag=branch-1_4&r1=1.1.1.1.2.27&r2=1.1.1.1.2.28
http://cvs.savannah.gnu.org/viewcvs/m4/src/builtin.c?cvsroot=m4&only_with_tag=branch-1_4&r1=1.1.1.1.2.14&r2=1.1.1.1.2.15
http://cvs.savannah.gnu.org/viewcvs/m4/src/freeze.c?cvsroot=m4&only_with_tag=branch-1_4&r1=1.1.1.1.2.7&r2=1.1.1.1.2.8
http://cvs.savannah.gnu.org/viewcvs/m4/src/m4.h?cvsroot=m4&only_with_tag=branch-1_4&r1=1.1.1.1.2.12&r2=1.1.1.1.2.13