Rollup merge of #32675 - dhuseby:snapshots-01-04-16, r=alexcrichton

adds dragonflybsd to snapshots.txt

@alexcrichton please upload the following snapshots when landing this patch:

https://github.com/dhuseby/rust-manual-snapshots/raw/master/rust-stage0-2016-02-17-4d3eebf-dragonfly-x86_64-765bb5820ad406e966ec0ac51c8070b656459b02.tar.bz2

https://github.com/dhuseby/rust-manual-snapshots/raw/master/rust-stage0-2016-02-17-4d3eebf-freebsd-x86_64-395adf223f3f25514c9dffecb524f493c42a0e5d.tar.bz2

Author: Manishearth

src/snapshots.txt

@@ -9,6 +9,7 @@ S 2016-03-18 235d774
   freebsd-x86_64 390b9a9f60f3d0d6a52c04d939a0355f572d03b3
 
 S 2016-02-17 4d3eebf
+  dragonfly-x86_64 765bb5820ad406e966ec0ac51c8070b656459b02
   linux-i386 5f194aa7628c0703f0fd48adc4ec7f3cc64b98c7
   linux-x86_64 d29b7607d13d64078b6324aec82926fb493f59ba
   macos-i386 4c8e42dd649e247f3576bf9dfa273327b4907f9c