Implement top-level of lsu
Merge branch 'master' into lsu-simple

Conflicts:
	vhdl.xise
Implement mem_queue
Initial implementation of complete lsu
Correct timing issues in mem_control.
Type fix.
Small clarification on active-low.
Document mem_queue_cell.
Work in progress.
Implement lsu with shift register at end.
Remove garbage files.
Merge branch 'master' into lsu-simple

Conflicts:
	vhdl.xise
Merge pull request #35 from dmpro2014/lsu-simple

Lsu simple