#1 multiple shared mem allocation of same buffer

[Mark Spieth]

the same shared mem buffer is allocated multiple times without being released.

patch attached

[Mark Spieth]

[Mark Spieth]

[Mark Spieth]

[Mark Spieth]

[Mark Spieth]

updated patch + clear shmem on alloc or first use if already alloced.
also -f foreground option like wview assists in debugging.

problems remain.
1. no dump on segfault. (Ive seen these occur)
2. sometimes shared mem not released. not sure of scenario yet.