Created attachment 591518 [details] [diff] [review]
Update NSPR to NSPR_4_9_BETA6 tag. Fixes bug 712262, bug 712275 & bug 712281
Of the three bugs BETA6 fixes, only bug 712281 is wanted as a dependency for bug 683127. The two others fix a few issues related to building for android. Overall, this is low risk.