Document the new posix options in blank_state's and entry_state's docstrings
Document the new posix options in blank_state's and entry_state's docstrings

angr/angr,axt/angr,tyb0807/angr,iamahuman/angr,iamahuman/angr,tyb0807/angr,iamahuman/angr,haylesr/angr,axt/angr,chubbymaggie/angr,schieb/angr,angr/angr,f-prettyland/angr,tyb0807/angr,haylesr/angr,schieb/angr,chubbymaggie/angr,f-prettyland/angr,f-prettyland/angr,chubbymaggie/angr,angr/angr,axt/angr,schieb/angr