builtins.c (fold_builtin_strlen, [...]): New functions.

2004-09-08  Eric Christopher  <echristo@redhat.com>

        * builtins.c (fold_builtin_strlen, fold_builtin_sqrt, fold_builtin_cbrt,
	fold_builtin_pow, fold_builtin_sin, fold_builtin_cos, fold_builtin_tan,
        fold_builtin_atan): New functions. Migrate function bodies...
        (fold_builtin_1): ... from here.

From-SVN: r87206