Applied a patch by Gordon Russell

o Fixes a few cosmetic issues and adds a comment for clarity.
o Provides Chris's newer dev_vtty with my patches.
o Fixes two compile warnings in some other files.
o Changes the makefile so that I can compile...
Fix for console by Gordon
Commented out debug messages in MIPS64 emulation
New System ID feature by Gordon

Able to set system id at runtime in cli mode using -I <systemid> or
set_system_id in hypervisor mode. This is for routers
1700,2600,3600,3725,3745, and 7200 (not npe-400 or npe-g1 or 2).
System id format is dependent on router, e.g. -I 4279256517 or
-I FTX0945W0MY (these are the current defaults).
Removed old code
Dynamips stable and unstable versions merged
Switched to forced_inline for dev_access_fast to avoid lot of defined but not used warnings when compiling
Removed old and useless files
Added tag RC3-community for changeset b5866ebc66d9
FreeBSD patches (http://www.freebsd.org/cgi/cvsweb.cgi/ports/emulators/dynamips-community/files/)
Fixes hypervisor problem of only using default port with a bind address
IPv6 support for console/aux using IPv6 centric method (accepts IPv4 addresses)
Support for RFC2553 + binding on specific addresses for console/aux connections.
Update CFLAGS and LIBS for Cygwin
Specific binding address for stable branch
True AF independent code (RFC2553). Accepts IPv6 and IPv4 clients in the same console session.
[Added] show_cpu_usage command for the vm : gns3 idlepc calculation
Fix for the following issue: when a router (2691, 3725 or 3745) is powered off, the function dev_gt96100_mpsc_unset_nio is called once and when exit from Dynagen, the function dev_gt96100_mpsc_unset_nio is called again. In this second call, the 'd' variable is NULL, which causes a crash.
Add cpu usage command to unstable branch + switch version to RC5
Multiplatform get_cpu_usage function