K 10
svn:author
V 6
jbeich
K 8
svn:date
V 27
2017-01-19T05:13:54.905988Z
K 7
svn:log
V 296
MFH: r431816

lang/spidermonkey24: prefer pre-C++11 decltype from libc++

libc++ 4.0 started to use it within <string> in a way incompatible
with __typeof__ which broke build but upstream switched to C++11 long
ago to notice -Wmacro-redefined.

PR:		216010
Approved by:	ports-secteam (junovitch)

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