+ add configure check to distinguish clang from gcc to eliminate
warnings about unused command-line parameters when compiler warnings
are enabled.
+ improve behavior when updating terminfo entries which are hardlinked
by allowing for the possibility that an alias has been repurposed to
a new primary name.
+ fix some strict compiler warnings based on package scripts.
+ further fixes for configure check for working poll (Debian #676461).
+ 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.