library: ensure 'namespace' types treated consistently

library: ensure 'namespace' types treated consistently

Unlike the ps kludge under the master branch to ensure
that namespaces appear the same under both 32 & 64-bit
models, this newlib branch already used a proper type.

However source data still carried the original type as
'signed long' versus that more proper 'unsigned long'.

So, this patch makes sources & destinations identical.

Reference(s):
. master branch ps kludge
commit c41c614b0c038d9374191f545259d9d70c451316

Signed-off-by: Jim Warner <james.warner@comcast.net>