Log Message:
For this to work nicely on Linux, we need to:
	- add -lapm to LDFLAGS (which was removed during patching)
	- ifdef our own net_apm.cc (created during patching)
	- change ONLY_FOR_PLATFORMS from ... Linux-*-i[3-6]86 to
	  ... Linux-*-* (all Linuxen should have include/apm.h)