Const variables in prototypes don't add much value, but make the code
larger and redundant. Remove these const keywords.
Note, this doesn't apply to pointers to const memory.
Compilers remove dead assignments in optimization phase. But SHA1 code
uses them for wiping of sensitive data. Fix this with the trick used
by openssl.
@sjaeckel integrated clang-format with formal coding style. Run his
script and commit changes.
There are pros and cons of this commit.
Mixed coding style is a "broken window". A good single style simplifies
reading and writing code.
On the other hand, this is a big change which will lead to conflicts.
In this place value of variable i is constant and predictable. No point
to clean it. Furthermore, since the value is not used after assignment,
compiler will optimize and remove the assignment.
This patch fixes a warning from the clang static analyzer.
sha1.c contains symbols that overlap with libcrypto. This patch
fixes linking with libstrophe as static library.
Prefix crypto_ will help to group other crypto API in the future.
