You may either move this whole folder ("villager") as it is into the "...assets\minecraft\mcpatcher\mobs..." folder
this will enable the random villagers within game, so they will be mixed with the ones provided by default in pack.

Or if you wish to have only this type of villagers present in the game (with the weird nose, etc.) then delete the default villager folder
within "...assets\minecraft\textures\entity\mobs..." and place this folder there.
After this rename the villagers textures to default formate => delete the number "2" from the file name.

Example:
rename "butcher2.png" to "butcher.png"