HP-UX requires DSOs to be executable. "make install" takes care of

this, but binbuild-install.sh does not.  This patch tweaks
install-bindist.sh to make the DSOs executable.  As with "make
install", the DSOs will be marked executable for all platforms, not
just HP-UX.  (Actually, install-sh is invoked by "make install" a
little differently for DSOs on rhapsody/darwin, but there is no
special processing for rhapsody/darwin in install-bindist.sh
currently so they shouldn't be hurt by the change below.)

PR:             7428
Submitted by:	Jeff Trawick


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@91545 13f79535-47bb-0310-9956-ffa450edef68