jk generate will fail silently to overwrite files

[squaremo]

There are probably other considerations, but right now I am finding this an annoying default.

[squaremo]

More details: I'm writing a test for jk generate. It passed once; and, since it never overwrites the files, even if I change the code for the test, it will keep passing since it'll just leave the output files as they are, silently.

[jaxxstorm]

this is also very frustrating to me, I'm finding myself having to build in cleans to different makefiles to get around it