linux 4.27 runs 4 times slower than winxp

1. For a reason yet unknown we couldn't get gcc to compile code that runs as fast as what we get with MSVC. The difference is roughly a factor of 2. This currently applies to all non-Windows architectures. It has been reported to be faster to run the Windows client on Wine than to use the native Linux one.

2. The App is not optimized for 64Bit CPUs, neither the code nor the compilation process.

Both applies to the E@H Application only, I don't know about the 4.27 BOINC client yet.

BM