Revert "Update math, spirit, align from master."

This reverts commit 746b3936fdf02a44f26711b5b2f9bdf4fdebf870.

Sorry, I accidentally ran the commitbot when it's not meant to be
running.

libs/align

@@ -1 +1 @@
-Subproject commit 2d97f75083447a2a81d9e50e710dcb8f02ca5f8a
+Subproject commit 63453133f30afe199f0bfc3c29391a9eb7411355

libs/math

@@ -1 +1 @@
-Subproject commit 67d5d106853bd5de50733820af9c75dc211b772f
+Subproject commit d0671879a1f14a430f2088bc102271ce6f42b1ab

libs/spirit

@@ -1 +1 @@
-Subproject commit 25c00abf36a1bdce32177632d7e0bbcb03869051
+Subproject commit 509b0891d740f4f33618323e90ec9d622b779df1