some variables require constexpr or const declaration but grab.py doesn't write it

[jinpavg]

for example, kcathedral2.hpp includes a bunch of

constexpr int shortA = 78;
constexpr int shortB = 760;
constexpr int shortC = 982;
constexpr int shortD = 528;
constexpr int shortE = 445;

when grab.py munches on similar effects, like kcathedral3, it doesn't add that, so these were all coming up as "undeclared identifier"

 double aAL[delayA + 5];
 double aBL[delayB + 5];
 double aCL[delayC + 5];
 double aDL[delayD + 5];
 double aEL[delayE + 5];
 ```