Bug#964957: ugrep: Baseline violation on several architectures

[Adrian Bunk]

Source: ugrep
Version: 2.1.1+dfsg-1
Severity: serious

After looking at the build log and sources, there are several
baseline violations due to the package being built for what
is supported on the buildd instead of the architecture baseline:
- -march=native is always wrong in a distribution build
- SSE2 is part of the amd64 baseline, but not the i386 baseline
- AVX is not part of the amd64 or i386 baseline
- NEON is not part of the armhf baseline