lib: Include compiler.h as early as is possible in the build

[donaldsharp]

The compiler.h header provides us with some useful macro's
that we are using in the system. We do not know exactly
where the CPP_NOTICE and CPP_WARN macros are used but
they can move around. Place this header early in the
build then.

Signed-off-by: Donald Sharp sharpd@cumulusnetworks.com

[NetDEF-CI]

Continuous Integration Result: FAILED

See below for issues.
CI System Testrun URL: https://ci1.netdef.org/browse/FRR-FRRPULLREQ-5558/

This is a comment from an EXPERIMENTAL automated CI system.
For questions and feedback in regards to this CI system, please feel free to email
Martin Winter - mwinter (at) opensourcerouting.org.

Get source and apply patch from patchwork: Successful

Building Stage: Failed

Fedora24 amd64 build: Successful
Ubuntu1604 amd64 build: Successful
Ubuntu1404 amd64 build: Successful
Ubuntu 16.04 i386: Successful
Ubuntu 18.04 amd64 build: Successful
Debian8 amd64 build: Successful
CentOS6 amd64 build: Successful
NetBSD6 amd64 build: Successful
FreeBSD9 amd64 build: Successful
OmniOS amd64 build: Successful
CentOS7 amd64 build: Successful
Ubuntu1204 amd64 build: Successful
Debian9 amd64 build: Successful
OpenBSD60 amd64 build: Successful
NetBSD7 amd64 build: Successful

FreeBSD11 amd64 build: Failed

DejaGNU Unittests (make check) failed for FreeBSD11 amd64 build
see PyTest log at https://ci1.netdef.org/browse/FRR-FRRPULLREQ-5558/artifact/CI009BUILD/ErrorLog/log_pytests.txt
FreeBSD11 amd64 build: config.status output from configure script can be found at https://ci1.netdef.org/browse/FRR-FRRPULLREQ-5558/artifact/CI009BUILD/config.status/config.status

FreeBSD10 amd64 build: Failed

DejaGNU Unittests (make check) failed for FreeBSD10 amd64 build
see PyTest log at https://ci1.netdef.org/browse/FRR-FRRPULLREQ-5558/artifact/CI003BUILD/ErrorLog/log_pytests.txt
FreeBSD10 amd64 build: config.status output from configure script can be found at https://ci1.netdef.org/browse/FRR-FRRPULLREQ-5558/artifact/CI003BUILD/config.status/config.status

---

Warnings Generated during build:

Ubuntu 18.04 amd64 build: Successful with additional warnings:

Debian Package lintian failed for Ubuntu 18.04 amd64 build:
(see full package build log at https://ci1.netdef.org/browse/FRR-FRRPULLREQ-5558/artifact/U1804AMD64/ErrorLog/log_lintian.txt)

W: frr: shared-lib-without-dependency-information usr/lib/libfrrfpm_pb.so.0.0.0
N: 6 tags overridden (5 warnings, 1 info)