This builds DSO's correctly on linux2 using gcc -shared instead of

ld -Bshareable.  It also tweaks apxs to correctly pass -Wl args to
the linker in case the linker is gcc and not ld.  Theoretically all
systems that use gcc should be using gcc -shared, but I have only tested
this on linux2 so far and therefore have only turned it on for this
platform.  I will test other platforms as well, but could use some
help.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@83497 13f79535-47bb-0310-9956-ffa450edef68