erlang: bump to version 20.0

This change bumps the Erlang version from 19.3 to 20.0. As a new major
release, there are a few incompatibilities. Details are here:
http://www.erlang.org/news/114

This should fix builds on ppc64le host machines:
http://autobuild.buildroot.net/results/407af9800313d4540643d7625e85acc0c2366892
http://autobuild.buildroot.net/results/2aca54ad48ecfd72242d97499e21a46c1b384b10

Signed-off-by: Johan Oudinet <johan.oudinet@gmail.com>
Reviewed-by: Frank Hunleth <fhunleth@troodon-software.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/erlang/erlang.hash

@@ -1,3 +1,3 @@
 # md5 from http://www.erlang.org/download/MD5, sha256 locally computed
-md5	a8c259ec47bf84e77510673e1b76b6db	otp_src_19.3.tar.gz
-sha256  fe4a00651db39b8542b04530a48d24b2f2e7e0b77cbe93d728c9f05325bdfe83	otp_src_19.3.tar.gz
+md5     2faed2c3519353e6bc2501ed4d8e6ae7        otp_src_20.0.tar.gz
+sha256  fe80e1e14a2772901be717694bb30ac4e9a07eee0cc7a28988724cbd21476811        otp_src_20.0.tar.gz

package/erlang/erlang.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 # See note below when updating Erlang
-ERLANG_VERSION = 19.3
+ERLANG_VERSION = 20.0
 ERLANG_SITE = http://www.erlang.org/download
 ERLANG_SOURCE = otp_src_$(ERLANG_VERSION).tar.gz
 ERLANG_DEPENDENCIES = host-erlang
@@ -19,7 +19,7 @@ ERLANG_AUTORECONF = YES
 
 # Whenever updating Erlang, this value should be updated as well, to the
 # value of EI_VSN in the file lib/erl_interface/vsn.mk
-ERLANG_EI_VSN = 3.9.3
+ERLANG_EI_VSN = 3.10
 
 # The configure checks for these functions fail incorrectly
 ERLANG_CONF_ENV = ac_cv_func_isnan=yes ac_cv_func_isinf=yes