Change for out-of-source build

[avtikhon]

We use to build Curl sources in our project and wanted to have out-of-source build. To make it able we need to avoid of use the current paths. In Curl sources we found this single place where for cleanup the current path was used for temporary files. We can suggest to avoid of its use and run 'find' command to find and remove needed files.
Need for tarantool/tarantool#4874

[bagder]

I don't understand the description. You want to fix out-of-tree builds. But why is storing a temp file in "current directory" a problem for those? In most cases, that's exactly where you want the files to be made as that's the place you build as compared to where the source lives.

I'm not against the fix, I like avoiding a tempfile, I just have a problem to understand the explanation!

[bagder]

Thanks. I modified the commit message before merging because of what I mentioned above.