update build docs
Fix importwallet nTimeFirstKey

Conflicts:
	src/rpcdump.cpp
-alertnotify=<cmd>

Runs a shell command when an AppliesToMe() alert is received.
%s in the <cmd> string is replaced with the alert.strStatusBar
message.

Conflicts:
	src/init.cpp
	src/test/alert_tests.cpp
	src/test/data/alertTests
RPC: Forbid RPC username == RPC password

Added security measure.
Recommend alertnotify