Add uninstall target in cmake

[dota17]

Add uninstall target in cmake

[dota17]

hi, hawicz
I have added several cmake features before. What else do you think needs to be added in cmake?

[hawicz]

er... that's odd, I could have sworn I had commented on this change.
Anyway: using the -r option to rm is unnecessary and dangerous. The contents of install_manifest.txt look like it's just files, not directories, and even if it were directories you wouldn't want to remove them if they happened to contain non-json-c files in them.

[dota17]

I have modified the make_uninstall in CMakeLists.txt and added the cmake/cmake_uninstall.cmake.in file according the official manual

[hawicz]

oof, that's a whole pile of complexity for a marginally useful feature. :( Sure, they might recommend that for "cross platform compatibility", but let's not drink all the kool aid.
Please feed the contents of install_manifest to rm like you were doing before, just without the "-r" option to recurse.

[dota17]

ok, finished