Revert "Makefile: more improvement"

This reverts commit 78136576b27bb2a1157f5271c31c800e4b24a2cb.
Revert "Makefile: cleanup and reorder build flags"

This reverts commit 3822ab72bec60f36c3b4ad41e29d5bea75e4aa54.
Revert "Makefile: adding config variable for Ofast compilation"

This reverts commit 2501c609ef560b47526ca819e56f112978bd504e.
Revert "Makefile: enable graphite loop optimization"

This reverts commit 6c52386c1db3f5cece95ef75993c79ad260790ec.
Revert "Makefile: improve build flags"

This reverts commit a35446f2b67f78029f096e54d1f0d6368e390799.
Revert "fix wrong build flags setup and add more build flags"

This reverts commit b41a864d071966eedd27c2bec404411436017bef.
Revert "Makefile: adding config variable for Os/O2/O3 compilation"

This reverts commit 1cb22d5ec085d75cc1b61c9ed77a166e025c2c2c.
Revert "Makefile: more build flags"

This reverts commit 000c0e7bdfbcf2d7c3adeeea74f02cb1782cfdc2.
Revert "Makefile: use -fno-pic to compile modules"

This reverts commit 4160c5c451a59d21490516f71d648fed5d144493.
Revert "Makefile: improved build flags"

This reverts commit 74dbc793e8a5fabd1d5c194fb88e84cdcfc3bcda.