guile 1.6.4 a bit faster?

[Doug Evans]

While the explicit symbol/string conversions introduce some minimal slowness
on the cgen side, guile 1.6.4 appears to be faster thus making up for it.
[or maybe the gcc that compiled 1.6.4 is much improved over the gcc
that compiled 1.3 :-)  guess I should verify that ...]

This is to generate all opcodes files with a sample size of 3, whoop de do.

guile 1.3:
94.89user 1.04system 1:41.28elapsed 94%CPU (0avgtext+0avgdata 0maxresident)k
94.78user 0.79system 1:40.96elapsed 94%CPU (0avgtext+0avgdata 0maxresident)k
94.89user 0.91system 1:42.35elapsed 93%CPU (0avgtext+0avgdata 0maxresident)k

guile 1.6.4:
82.38user 0.93system 1:28.39elapsed 94%CPU (0avgtext+0avgdata 0maxresident)k
82.32user 0.88system 1:28.63elapsed 93%CPU (0avgtext+0avgdata 0maxresident)k
82.46user 0.78system 1:28.60elapsed 93%CPU (0avgtext+0avgdata 0maxresident)k