Fix for SIGILL crash under Linux without AVX support

In wxSQLite3 issue https://github.com/utelle/wxsqlite3/issues/126 a crash under Linux without AVX support was reported. The GCC compiler generated invalid instructions for the software implementation of the AEGIS algorithm. The issue could be solved by re-arranging the AEGIS code blocks, so that blocks using the same hardware feature are now grouped together.

Test databases for the ciphers AEGIS and Ascon128 were added.