Change API name to [s|g]et_label/1 #305

Job	Run time
Build Erlang/OTP (64-bit)	24m 27s
Event File	2s
Build Erlang/OTP (iOS)	8m 52s
Build Erlang/OTP (macOS)	11m 42s
Build Erlang/OTP (32-bit)	19m 13s
Build Erlang/OTP (Types and Flavors)	17m 38s
Build Erlang/OTP (cross-compile)	22m 45s
Build Erlang/OTP (Windows)	17m 42s
Build and check documentation	16m 59s
Build Erlang/OTP (clang)	13m 52s
Run static analysis	13m 58s
Test Erlang/OTP (emulator)	55m 10s
Test Erlang/OTP (debug)	9m 2s
Test Erlang/OTP (asn1)	21m 57s
Test Erlang/OTP (common_test)	1h 33m 3s
Test Erlang/OTP (compiler)	17m 37s
Test Erlang/OTP (crypto)	11m 9s
Test Erlang/OTP (debugger)	9m 25s
Test Erlang/OTP (dialyzer)	28m 36s
Test Erlang/OTP (edoc)	9m 42s
Test Erlang/OTP (eldap)	5m 47s
Test Erlang/OTP (erl_docgen)	6m 47s
Test Erlang/OTP (erl_interface)	8m 40s
Test Erlang/OTP (eunit)	7m 8s
Test Erlang/OTP (inets)	13m 23s
Test Erlang/OTP (kernel)	1h 3m 55s
Test Erlang/OTP (megaco)	34m 51s
Test Erlang/OTP (mnesia)	22m 21s
Test Erlang/OTP (observer)	16m 25s
Test Erlang/OTP (os_mon)	8m 32s
Test Erlang/OTP (public_key)	7m 26s
Test Erlang/OTP (reltool)	12m 46s
Test Erlang/OTP (runtime_tools)	8m 8s
Test Erlang/OTP (sasl)	11m 30s
Test Erlang/OTP (snmp)	51m 12s
Test Erlang/OTP (ssh)	23m 6s
Test Erlang/OTP (ssl)	51m 24s
Test Erlang/OTP (stdlib)	41m 40s
Test Erlang/OTP (tools)	10m 33s
Test Erlang/OTP (wx)	9m 32s
Test Erlang/OTP (xmerl)	9m 32s
Release Erlang/OTP	0s
Test Erlang/OTP (system)	20m 58s
	14h 28m 27s

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