Don't run configure and ignore some build files

[Quix0r]

Don't configure, people may have "out-of-source-tree" builds:

Normally you do:

./configure --foo-bar
make

This is common but however does mess up the source tree with build files. You can easily separate it from each other:

mkdir build
cd build
../configure --foo-bar

Now all build (object files, Makefile files, et cetera) stay out of the source code tree and don't mix with it anymore.