1.5.2

Improvements since 1.5.1:

1. #51: Fix crash when `--server.address` is not defined in the configuration.
2. 673c679: Change `autogen.sh`'s interpreter to `/bin/sh`.
   (Allows straightforward compilation on default *BSDs.)
3. #53: Add RPM packages to the release.
4. #55: Fix situational crash due to bad code cleanup.
5. eb68ebb, 274dc14: Performance optimizations.
6. #57: Fix practically inevitable crash in server mode's second iteration.
7. #58: Remove BGPsec certificate code.
   (Was crashing easily; needs more testing.)

Please note that version numbers no longer include "v".
(ie. "1.5.2", not "v1.5.2".)
I did this to streamline RPM package generation.
You might need to adjust scripts.
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S0dIIecqBMhnNxAU/nXC5F6A/ndLuvdm/SM1guUN/eNGclkm5aosfRtlqzd01bNd
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