Log Message:
update to ng-spice-17

Changes are:

Ng-spice-rework-17
============
This is a bug fix release. Previous release tarball did not included
an include file necessary for compiling numparam library.

Ng-spice-rework-16
============

Rework-16 comes out after almost one year of CVS development (from
15-fixedRC3). This release improves ngspice in three ways:

- Bug fixing: most of the bugs that affected rework-15 have been fixed,
    thus ngspice is more stable, especially the xspice extension, the
    subcircuit (X devices) handling and the numparam library.

- New features: netlist syntax has been expandend allowing for end-of-line
    comments. A ".global" card has beed added to define global nodes, i.e.
    nodes that are not expanded in subcircuits. It is possible to define TC
    for resistors on the instance line. The editline library can be used
    instead of readline (no more GPL license violation).

- Porting: ngspice now works (with xspice extension) on Windows using
           MINGW/MSYS.