sci-electronics/systemc: Import systemc-2.3.4-r1 from Gentoo

SystemC is used with Verilator as an alternative to C++.

The `systemc-2.3.4-r1.ebuild` from Gentoo upstream has been renamed to
`systemc-2.3.4.ebuild`. A `-r1` symbolic link has been created
targetting the actual ebuild.

Ebuild contains such differences:
* adjusted KEYWORDS,
* added `src_test` (tests aren't even started using `default_src_test`).

TEST=FEATURES="test" emerge sci-electronics/systemc

Change-Id: Ic41643d71742641953e7691833549af650a07706
Tested-by: Adam Jelinski <>
Tested-by: Dan Callaghan <>
Reviewed-by: Dan Callaghan <>
Commit-Queue: Dan Callaghan <>
5 files changed