whose cgi programs may no longer work, etc.
* Fix .so symlinks not to refer to build location (!) due to dh_install
running after the corrected symlinks are made in debian/rules.
+ * Remove -lm from gpio link line. It is not used, and I'm told that
+ introducing it as a dependency is not desirable. Not linking with -lm
+ will ensure that we detect such mistakes.
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