CVS psmith make: Add support for OS/2, contributed by Andreas Buening <andreas.buening@xxxxxxxx>

CVSROOT:        /cvsroot/make
Module name:    make
Changes by:     psmith  03/03/24 18:14:16

Modified files:
        .              : ChangeLog default.c dir.c function.c job.c 
                         job.h main.c make.h read.c remake.c variable.c 
                         vpath.c 

Log message:
Add support for OS/2, contributed by Andreas Buening <andreas.buening@xxxxxxxx>
Also a small patch from Hartmut Becker <Hartmut.Becker@xxxxxxxxxx> for VMS.