FreeBSD/ports 00ee8f9 (r506669)lang/rust Makefile

lang/rust: Clean up bootstrap handling

Fix handling of BOOTSTRAPS_SUFFIX.  On powerpc64 the -elfv1 suffix
needs to be stripped from the bootstraps since Rust expects them
without it.

PR:             239158
Reported by:    pkubaj
DeltaFile
+20-31lang/rust/Makefile
+20-311 files

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