ENH add recursive argument to rmdir
use one loop in readdir
use fileorlink
TST rmdir recursive
TST isfileorlink
DOC for isfileorlink and rmdir recursive
Merge branch 'rmdir_recursive' of github.com:hayd/julia into hayd-rmdir_recursive

Conflicts:
	base/pkg/write.jl
replace rmdir with rm(path; recursive)
remove isfileorlink
Merge branch 'hayd-rmdir_recursive'
Merge branch 'master' of github.com:JuliaLang/julia