move reflection code into final place.

this is just a branch.
next cl will update and add to build

R=rsc
DELTA=4528  (2264 added, 2264 deleted, 0 changed)
OCL=17670
CL=17672

diff --git a/usr/r/reflect/Makefile b/src/lib/reflect/Makefile
similarity index 100%
rename from usr/r/reflect/Makefile
rename to src/lib/reflect/Makefile

diff --git a/usr/r/reflect/cast_amd64.s b/src/lib/reflect/cast_amd64.s
similarity index 100%
rename from usr/r/reflect/cast_amd64.s
rename to src/lib/reflect/cast_amd64.s

diff --git a/usr/r/reflect/gencast.sh b/src/lib/reflect/gencast.sh
similarity index 100%
rename from usr/r/reflect/gencast.sh
rename to src/lib/reflect/gencast.sh

diff --git a/usr/r/reflect/main.go b/src/lib/reflect/main.go
similarity index 100%
rename from usr/r/reflect/main.go
rename to src/lib/reflect/main.go

diff --git a/usr/r/reflect/tostring.go b/src/lib/reflect/tostring.go
similarity index 100%
rename from usr/r/reflect/tostring.go
rename to src/lib/reflect/tostring.go

diff --git a/usr/r/reflect/type.go b/src/lib/reflect/type.go
similarity index 100%
rename from usr/r/reflect/type.go
rename to src/lib/reflect/type.go

diff --git a/usr/r/reflect/typestring.c b/src/lib/reflect/typestring.c
similarity index 100%
rename from usr/r/reflect/typestring.c
rename to src/lib/reflect/typestring.c

diff --git a/usr/r/reflect/value.go b/src/lib/reflect/value.go
similarity index 100%
rename from usr/r/reflect/value.go
rename to src/lib/reflect/value.go