ttf-mplus: use PACKAGESPLITFUNCS and add drop ttf-common dependency

* there is only ttf-dejavu-common

* fixes following warnings:
  ttf-mplus-027: ttf-mplus-1c-black rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1c-bold rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1c-heavy rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1c-light rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1c-medium rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1c-regular rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1c-thin rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1m-bold rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1m-light rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1m-medium rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1m-regular rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1m-thin rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1mn-bold rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1mn-light rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1mn-medium rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1mn-regular rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1mn-thin rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1p-black rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1p-bold rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1p-heavy rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1p-light rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1p-medium rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1p-regular rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-1p-thin rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2c-black rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2c-bold rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2c-heavy rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2c-light rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2c-medium rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2c-regular rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2c-thin rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2m-bold rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2m-light rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2m-medium rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2m-regular rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2m-thin rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2p-black rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2p-bold rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2p-heavy rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2p-light rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2p-medium rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2p-regular rdepends on ttf-common but it isn't a build dependency? [build-deps]
  ttf-mplus-027: ttf-mplus-2p-thin rdepends on ttf-common but it isn't a build dependency? [build-deps]

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>