ddetect: use shared libisapnp ?

[Glenn McGrath <bug1@optushome.com.au>]

Linked against static libisapnp.a

20k     cddetect
20k     cpudetect
20k     diskdetect
20k     ethdetect
28k     mdmdetect
20k     memdetect
128k    total

Linked agianst a libisapnp.so i hacked together.
8.0k    cddetect
4.0k    cpudetect
4.0k    diskdetect
8.0k    ethdetect
12k     mdmdetect
4.0k    memdetect
32k     libisapnp.so.1.23.03
72k     total

Depending on how many ddetect components we will want to use will
determine wether tis a good idea to use a shared libispnp.

If we just more than two detect components then it will save space to
use shared libs.


Glenn