Add support for inline bitfields to headergen.
Add support for inline bitfields to headergen.

pierremoreau/envytools,pierremoreau/envytools,kfractal/envytools,karolherbst/envytools,kfractal/envytools,envytools/envytools,kfractal/envytools,grate-driver/envytools,hakzsam/envytools,MoochMcGee/envytools,karolherbst/envytools,kfractal/envytools,grate-driver/envytools,envytools/envytools,MoochMcGee/envytools,karolherbst/envytools,envytools/envytools,MoochMcGee/envytools,karolherbst/envytools,hakzsam/envytools,hakzsam/envytools,grate-driver/envytools,pierremoreau/envytools,envytools/envytools,MoochMcGee/envytools,grate-driver/envytools,grate-driver/envytools,hakzsam/envytools,MoochMcGee/envytools,kfractal/envytools,pierremoreau/envytools,envytools/envytools,hakzsam/envytools,pierremoreau/envytools,karolherbst/envytools