Support separate build targets for different LAppS configurations

[pkpro]

LAppS supports building for AVX and Generic (SSSE3) instruction sets as well it supports building binaries with or without server stats and with or without TLS.

Build configuration have to be separated and there have to be distinguished binaries produced for each configuration:

1. Release with AVX2 support (with stats and with TLS support). Binary name: lapps.avx2
2. Release with AVX2 support and without server stats. Binary name: lapps.avx2.nostats
3. Release with AVX2 support without server stats and without TLS support. Binary name: lapps.avx2.notstats.notls
4. Generic Release (SSSE3) with TLS and stats enabled. Binary name: lapps
5. Generic Release (SSSE3) without stats. Binary name: lapps.nostats
6. Generic Release (SSSE3) without stats and without TLS support. Binary name lapps.nostats.notls

All these binaries must be included in binary deb package.