+ fix an uninitialized variable in -c/-n logic for infocmp changes
(cf: 20120526).
+ corrected fix for building c++ binding with clang 3.0 (report/patch
by Richard Yao, Gentoo #417613, cf: 20110409)
+ correct configure check for working poll, fixing the case where stdin
is redirected, e.g., in rpm/dpkg builds (Debian #676461).
+ add rpm- and dpkg-scripts, to test those build-environments.
The resulting packages are used only for testing.