1. When the seed callback is enabled, allow wc_GenerateSeed() to be used
as a default callback.
2. Modify all the tests and examples to use the default seed callback if
the seed callback is enabled.
* Adds `EVP_PKCS82PKEY` and `d2i_PKCS8_PRIV_KEY_INFO`.
* Adds `EVP_PKEY2PKCS8` and `i2d_PKCS8_PRIV_KEY_INFO`.
* Adds `ECDSA_verify`.
* Fix to allow `SHA256()` and `MD5()` with FIPSv2.
* Decouple crypto callbacks and hash flags
* Fix for possible use of uninitialized when building TLS bench without TLS v1.3.
* Fix for building with `NO_CHECK_PRIVATE_KEY`. Test `./configure --disable-pkcs12 --enable-opensslextra CFLAGS="-DNO_CHECK_PRIVATE_KEY"`.
* Fix to support `RSA_public_decrypt` for PKCSv15 only with FIPS.
* Cleanup `RSA_public_encrypt`, `RSA_public_decrypt` and `RSA_private_decrypt`.
* Added instructions for building wolfSSL with Android kernel.
Added PRIVATE_D version of rsa private key operation for SP
implementation for specific platforms.
WC_NO_RNG results in warnings when RNG calls don't do anything.
Added ifdef checks for variables not used otherwise.
Remove superfluous if statements like when checking ret == 0.
Change names of globals that are generic and are used locally before
global definition.
Remove definition of variable len that isn't used except as a
replacement for sz which is parameter.
Don't subtract two variables when one has just been assigned the value
of the other.
Fix shifting of signed value.
Fix parameter checking in aes.c and des3.c for platform specific code.
* Added support for running as only Client (`-c`) or Server (`-s`).
* Added support for using sockets (in addition to in memory mode `-m`).
* Fixed support for 16KB test packet (memory version needed TLS header space). Changed to default to 16KB.
* Fixed so transfer is done on each connection and there is not transfer limit (instead "shutdown" message is used).
* Made pthread support optional and based on HAVE_PTHREAD.
* Tested non-blocking support with sockets or shared memory.
To use with localhost sockets and threading use `./examples/benchmark/tls_bench`
To use with threading and in-memory use `./examples/benchmark/tls_bench -m`
To use as separate server client applications with localhost sockets use: `./examples/benchmark/tls_bench -s` and `./examples/benchmark/tls_bench -c` in separate terminals.
```
./examples/benchmark/tls_bench -?
tls_bench 3.15.7 NOTE: All files relative to wolfSSL home dir
-? Help, print this usage
-c Run as client only, no threading and uses sockets
-s Run as server only, no threading and uses sockets
-h Host (default localhost)
-P Port (default 11112)
-e List Every cipher suite available
-i Show peer info
-l <str> Cipher suite list (: delimited)
-t <num> Time <num> (seconds) to run each test (default 1)
-p <num> The packet size <num> in bytes [1-16kB] (default 16384)
-v Show verbose output
-d Enable debug messages
-T <num> Number of threaded server/client pairs (default 1)
-m Use local memory, not socket
```
