[GRASS5] install-sh

A number of Makefiles use wildcards in install commands, e.g.:

  $(INSTALL) -m 644 ../include/*.h $(GISBASE)/include/

This doesn't work with the install-sh script, which only accepts a
single file as the source. It doesn't generate an error, but only the
first file will actually be installed.

--
Glynn Clements <glynn@gclements.plus.com>