This reverts commit 0d001480a9.
The commit that changed the iteration style from c-based loops into for-each
loops caused major regressions in our string benchmarks. Arnold believes that we
are making a different inlining decision in the for-each loops. We should
reapply this patch after we fix the optimizer
The regression was detected in rdar://23776732.
The standard library has grown significantly, and we need a new
directory structure that clearly reflects the role of the APIs, and
allows future growth.
See stdlib/{public,internal,private}/README.txt for more information.
Swift SVN r25876
