Fix errors in HACKING.md

Comment out unused contact property

when in portable configuration and changing the
launch browser on startup setting on /configservice
ref: http://zzz.i2p/topics/3347

Retransmit handshake messages faster and expire faster (SSU 1/2)
log tweaks

Switch to OpenJDK17

See merge request !61

Use minimum MTU for IPv6 session confirmed to avoid PMTU issues
Set default MTU for known IPv6 tunnel brokers
Check for s mismatch in session confirmed RI
Don't put DateTime block after Termination block
Fix first message failed check
Log sent data packet size
Log tweaks

Set max MTU for range48.org brokered addresses
Limit MTU for brokered addresses in UDPAddress also

Reduce max consecutive message failures to fail session (SSU 1/2)
Set peer as unreachable for these failures
Reduce max consectutive session confirmed retransmissions
Fix session confirmed retransmission timing
Respond to relay tag request in data phase
Log tweaks

was treating them as acks

not simply when a new file is downloaded

Move establisher and packet handler initialization
to after the address initialization

SSU2: Don't log MTU warning at startup
Remove unused dropPeerCapacities()

to reduce netdb lookups

Only throttle messages 1 and 2
Send limit response on throttle
Throttle IPv6 based on first 8 bytes only

Allow lookups of our RI even when hidden
Consolidate routerHash() calls
Remove unused router.publishUnreachableRouters option, was default true

jbigi for Apple silicon

See merge request !63

Add ability to apply patches to GMP.  Apply fix for x18 register.  Run GMP tests after build.

See merge request !62