m4 ChangeLog doc/m4.texinfo

[Eric Blake]

CVSROOT:        /sources/m4
Module name:    m4
Changes by:     Eric Blake <ericb>      06/10/16 13:17:50

Modified files:
        .              : ChangeLog 
        doc            : m4.texinfo 

Log message:
        * doc/m4.texinfo: Port some changes from the branch.
        (Invoking m4): Promote to a chapter, instead of a section of
        Preliminaries.
        (Operation modes, Dynamic loading features, Preprocessor features)
        (Limits control Frozen state, Debugging options)
        (Command line files): Subdivide into new sections.
        (Cleardivert): Rename from cleardiv.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/m4/ChangeLog?cvsroot=m4&r1=1.420&r2=1.421
http://cvs.savannah.gnu.org/viewcvs/m4/doc/m4.texinfo?cvsroot=m4&r1=1.65&r2=1.66