Regularize the first line of version output.

For Wireshark, say "Wireshark", not "wireshark".

For other programs, put "(Wireshark)" after the program name, as per

	http://www.gnu.org/prep/standards/html_node/_002d_002dversion.html

("If the program is a subsidiary part of a larger package, mention the
package name in parentheses, like this").

Change-Id: I68558f64cfa6ee4423e42f3d6b120633ef1b2716
Reviewed-on: https://code.wireshark.org/review/2788
Reviewed-by: Guy Harris <guy@alum.mit.edu>