Fix Windows Compile failure due to missing <inttypes.h>

Including <inttypes.h> caused a windows build failure.
The test is now skipped if strtoimax & strtoumax are not supported.
It does this by checking for a define which is only available if
inttypes.h is not included. The include is done automagically inside e_os2.h.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8986)