Added all the remaining calls for circles
added piano parameters.
modified tabsequence.cpp to not pick piano as an effect
eff1 = rand() % eff_LASTEFFECT; //Temporarily prevent choosing to do a circle.
    eff2 = rand() % eff_LASTEFFECT;
    eff1 = (eff_NONE == eff1|| eff_TEXT == eff1 || eff_PICTURES == eff1)? eff1+1:eff1;
    eff2 = (eff_NONE == eff2|| eff_TEXT == eff2 || eff_PICTURES == eff2)? eff2+1:eff2;
    if(eff_PIANO == eff1) eff1 = eff_BARS; // 7-30-13 (scm) , protect us if e go out of range
    if(eff_PIANO == eff2) eff2 = eff_BARS; //
added renderpiano into git repository
Merge branch 'master' of https://github.com/smeighan/nutcracker_c