checks $WRKSRC for all direct dependencies in the limited-clean-depends:
target, like the original CLEAN-DEPENDS-LIMITED in bsd.port.mk
Approved by: bapt
Differential Revision: https://reviews.freebsd.org/D3233
Rewite CLEAN-DEPENDS*
Move inlined shell code into a proper script taking 2 args in arguments: full or
limited. The code I more simpler and understandable. The argument allows to
factorize the code between CLEAN-DEPENDS-FULL and CLEAN-DEPENDS-LIST
While here, make the code accept dependencies without ${PORTSDIR}