cgrep-6.4.20: dependencies

Dependencies for cgrep-6.4.20

cgrep	ansi-terminal (>=0.5) array (>=0.4) base (<5.0) bytestring (>=0.10) cmdargs (>=0.10) containers (>=0.5) directory (>=1.2) dlist (>=0.3) either (>=4.0) filepath (>=1.3) ghc-prim (>=0.2) mtl (>=2.0) regex-posix (>=0.90) safe (>=0.3) split (>=0.2) stm (>=2.1) stringsearch (>=0.3) unix-compat (>=0.4) unordered-containers (>=0.1)