m4 ChangeLog Makefile.maint bootstrap [branch-1_4]

[Eric Blake]

CVSROOT:        /sources/m4
Module name:    m4
Branch:         branch-1_4
Changes by:     Eric Blake <ericb>      06/07/15 21:32:50

Modified files:
        .              : ChangeLog Makefile.maint bootstrap 

Log message:
        * bootstrap: Backport --help, --version from head.
        (func_update): New function, for easily grabbing up-to-date files
        from gnulib.
        * Makefile.maint (web-manual): Fix for VPATH builds.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/m4/ChangeLog?cvsroot=m4&only_with_tag=branch-1_4&r1=1.1.1.1.2.115&r2=1.1.1.1.2.116
http://cvs.savannah.gnu.org/viewcvs/m4/Makefile.maint?cvsroot=m4&only_with_tag=branch-1_4&r1=1.1.2.6&r2=1.1.2.7
http://cvs.savannah.gnu.org/viewcvs/m4/bootstrap?cvsroot=m4&only_with_tag=branch-1_4&r1=1.31.2.2&r2=1.31.2.3