Tune quark part of Xn funcs

based on klaus commits, will increase a bit speed of most algos

PS: main increase is due to the register count tuning in Makefile

and for skein512 on linux, its the ROTL64
Fix usage and big strings on windows (colors rel.)

vsnprintf doesnt return the len on windows on fail, so use _vscprintf
msvc: fix the LTCG warning