Remove static libraries when image created
Restores static libraries on the BuildStream level, removing static libraries by a blacklist when composing sdk-image.bst
. For examples on how to strip most static libraries but preserve a few, see glibc or gcc elements. Unfortunately this is quite a verbose solution, and we don't need to explicitly list the static libraries we preserve.
Supercedes !1227 (closed)
Closes #744 (closed) #740 (closed)