Tests that we find something sensible for intl, capable of producing
binaries using gettext() to translate stuff.
No more need to manually check headers and *maybe* include the intl
library, which we were doing before; the new dependency actually
simplifies the existing test, and should simplify users' build files
too...
D lang compilers have an option -release (or similar) which turns off
asserts, contracts, and other runtime type checking. This patch wires
that up to the b_ndebug flag.
Fixes#7082
* xenial doesn't ship many dependencies, so make them all optional
since we don't guarantee that everything will work
* cmake/{5,6}: needs stdlib.h for EXIT_SUCCESS on GCC 5
* common/222: needs C++11, and GCC 5 doesn't understand `auto`
correctly unless we explicitly enable it.
* frameworks/1 boost: xenial doesn't ship boost_python3, so make it
properly optional
* frameworks/6 gettext: gettext can be installed without xgettext,
which doesn't cause the project to fail, but the installed files
list is different which causes the test to fail.
* frameworks/7 gnome: gobject-introspection can't be enabled because
the sanitizer unit test detects leaks in glib and fails
As it currently stands, if for whatever reason you have two files you
want to merge with the same output name, it will fail due to multiple
targets with the same name due to the target name being autogenerated
from the output kwarg.
Signed-off-by: Marty E. Plummer <hanetzer@startmail.com>