Makefile: remove -wundef

Change-Id: Iaad48500d7e3d372fad35a42803b362c3852417a
Reset to earlier Makefile

Change-Id: If7bd39e734d9552258d5f0ad064e78fd12d9279c
Makefile: make more butter (Ofast, DNDEBUG, etc)

thanks Cl3kener and Lens-F

Change-Id: I6d21c516345cd30a647eb6fdceb6d6409df52408
Makefiles: more Ofast and DNDEBUG

Change-Id: I043271e00216a37fefd70dd2b64d2ab1f49732a8
Makefile: neon -> neon-vfpv4

Change-Id: Ia990d3fc3942c40942bbc05a85242de73cb176f2