- added missing sections on comparisons for some types - clarified legal map key types (must support comparison) - updated open issues/todo list
- added missing sections on comparisons for some types
- clarified legal map key types (must support comparison)
- updated open issues/todo list

R=r
DELTA=81  (48 added, 19 deleted, 14 changed)
OCL=23580
CL=23621

bdwalton/debian-golang,bdwalton/debian-golang,gnanderson/go,tianon/debian-golang,h8liu/golang,dsriram/golang,wesolows/golang,wesolows/golang-old,dsriram/golang,gnanderson/go,nightlyone/golang,tianon/debian-golang,wesolows/golang,h8liu/golang,tv42/old-go,h8liu/golang,wesolows/golang,firebitsbr/golang-old,pombredanne/go-deleteme,wesolows/golang,tv42/old-go,wesolows/golang-old,apparentlymart/golang,pombredanne/go-deleteme,tianon/debian-golang,tianon/debian-golang,gnanderson/go,ssrl/go,wesolows/golang,wesolows/golang-old,apparentlymart/golang,firebitsbr/golang-old,tv42/old-go,bdwalton/debian-golang,bdwalton/debian-golang,tianon/debian-golang,bdwalton/debian-golang,bdwalton/debian-golang,tv42/old-go,firebitsbr/golang-old,gnanderson/go,h8liu/golang,wesolows/golang-old,ssrl/go,firebitsbr/golang-old,bdwalton/debian-golang,firebitsbr/golang-old,apparentlymart/golang,dsriram/golang,pombredanne/go-deleteme,tianon/debian-golang,apparentlymart/golang,firebitsbr/golang-old,dsriram/golang,ssrl/go,tv42/old-go,pombredanne/go-deleteme,firebitsbr/golang-old,bdwalton/debian-golang,h8liu/golang,wesolows/golang,nightlyone/golang,ssrl/go,pombredanne/go-deleteme,pombredanne/go-deleteme,wesolows/golang-old,tianon/debian-golang,dsriram/golang,h8liu/golang,nightlyone/golang,nightlyone/golang,pombredanne/go-deleteme,nightlyone/golang,apparentlymart/golang,wesolows/golang-old,tv42/old-go,dsriram/golang,tianon/debian-golang,ssrl/go,gnanderson/go,gnanderson/go,ssrl/go,wesolows/golang-old,firebitsbr/golang-old,dsriram/golang,h8liu/golang,apparentlymart/golang,nightlyone/golang,tv42/old-go,nightlyone/golang,apparentlymart/golang,wesolows/golang,ssrl/go,gnanderson/go