OSHMEM: fix bss check

fixed by AlexM reviewed by Miked

cmr=v1.8.2:reviewer=ompi-rm1.8
OSHMEM: fix wrong btl/sm processing and typo

fixed by Igor reviewed by Alex,Mike,Yossi

cmr=v1.8.2:reviewer=ompi-rm1.8
HCOLL: make it OFF by default

fixed by miked, reviewed by Alex

cmr=v1.8.2:reviewer=ompi-rm1.8
BUILD: update platform file with debug caps

cmr=v1.8.2:reviewer=ompi-rm1.8
OSHMEM: properly handle situation when verb is unavailable

fixed by Alex, reviewed by Miked
cmr=v1.8.2:reviewer=ompi-rm1.8