'Make clean' does not clean .a lib files

[dimxy]

When 'make clean' for the komodo build dir is called static lib .a lib files are not cleaned.
This might lead to unwanted side effects, f.e.:
add temporary debug printing to the code,
then do 'git reset 'to revert back to the state before the debug prints added,
even after 'make clean' you would still get a build with the debug prints

Suggestion is to clean .a files too.

[jmjatlanta]

I fixed this in #494

Until that is merged in, you should be able to make src/clean-all