pkg-config: Eliminate spaces in include path arguments
pkg-config: Eliminate spaces in include path arguments

Previously, some of the include path modifiers had spaces between `-I` and their
argument: for example, `-I /home/jhaberku/src/scylla/seastar/build/release/gen`.

When the CMake `FindPkgConfig` module [1] parsed the `seastar.pc` file as part
of the CLion IDE, it would fail to recognize these paths.

This change eliminates this space character and resolves the CLion errors.

Thanks to Vladislav Zolotarov for his help identifying this problem.

[1] https://cmake.org/cmake/help/latest/module/FindPkgConfig.html

Signed-off-by: Jesse Haber-Kucharsky <526eadea4792054b99d5fa5dd6be9acdd76c5418@scylladb.com>
Message-Id: <d39a1fff0e3370123e0e532485e8e4cc09878431.1499436751.git.526eadea4792054b99d5fa5dd6be9acdd76c5418@scylladb.com>

avikivity/seastar,scylladb/seastar,cloudius-systems/seastar,cloudius-systems/seastar,avikivity/seastar,dreamsxin/seastar,avikivity/seastar,syuu1228/seastar,dreamsxin/seastar,dreamsxin/seastar,syuu1228/seastar,syuu1228/seastar,scylladb/seastar,cloudius-systems/seastar,scylladb/seastar