swift234

stdlib: remove bitwise operations on Bool

Bitwise operations on Bool are redundant with other logic operations
that stdlib already provides.  The only reason to have them was to avoid
branching in the short-circuiting && and ||.

rdar://19340952

Surprisingly, replacing & and | in the standard library with && and ||
brought performance improvements and no significant performance
regressions:

RecursiveOwnedParameter 1.14
SelectionSort 1.19

Swift SVN r24674