[NQP Bump] 7632be8 [MoarVM Bump] Brings 5 commits

NQP bump brought: Raku/nqp@2018.03-53-ged5a6e3...2018.03-54-g7632be8

MoarVM bump brought: MoarVM/MoarVM@2018.03-89-gefa8e16...2018.03-94-gd115bf7
d115bf7 Use proper INFINITY constant
6affa07 Add Appveyor badge
a342936 Merge pull request #799 from samcv/libato
cd8e407 Merge branch 'master' into libato
718512a Add libatomic_ops as a submodule instead of in-tree

tools/build/NQP_REVISION

@@ -1 +1 @@
-2018.03-53-ged5a6e3
+2018.03-54-g7632be8