* correct symbol table size
* do not reorder functions in output
* traceback
* signal handling
* use same code for go + defer
* handle leaf functions in symbol table
R=kaib, dpx
CC=golang-dev
https://golang.org/cl/884041
test/64bit.go: segfaults on sheevaplug(armv5)
The following have long runtimes when GC is on.
Sample run time in seconds for android emulator
and sheevaplug
test/stack.go: 4934s 1780s
test/ken/chan.go: 860s 296s
test/gc1.go: 218s 69s
R=rsc, kaib
CC=golang-dev
https://golang.org/cl/749041
