net-p2p/amule: Adopt/Fix segmentation fault

• Add -DCRYPTOPP_DISABLE_ASM to CXXFLAGS on i386 and amd64, as cryptopp-8.7.0 build with this option by default on i386 and amd64. (5a19c08: security/cryptopp: Update to 8.7.0)

While I'm here:

• Makefile cleanup: license file, formatting and remove conflicts install on expired net-p2p/amule-devel port.

PR: 266866
Reported by: Francesco <francesco@magno.cc>
MFH: 2023Q2

(cherry picked from commit 4baf754027807e1ad7966055d40a4c4eb75a5717)