Merge pull request #6728 from kaspar030/introduce_pkgdirbase

Makefile.include

Makefile.vars

pkg/aversiveplusplus/Makefile.include

pkg/ccn-lite/Makefile.include

pkg/cmsis-dsp/Makefile.include

pkg/emb6/Makefile.include

pkg/heatshrink/Makefile.include

pkg/jsmn/Makefile.include

pkg/libcoap/Makefile.include

pkg/libfixmath/Makefile.include

pkg/lwip/Makefile.include

pkg/micro-ecc/Makefile.include

pkg/microcoap/Makefile.include

pkg/nanocoap/Makefile.include

pkg/nordic_softdevice_ble/Makefile

pkg/nordic_softdevice_ble/Makefile.include

pkg/oonf_api/Makefile.include

pkg/pkg.mk

pkg/relic/Makefile.include

pkg/tiny-asn1/Makefile.include