Allow building both static and shared library

[nmeum]

trafficstars

My current understanding of the jimtcl build system is that it is only possible to build either a shared (using ./configure --shared or a static library). For distributions which package jimtcl it would be desirable to allow building both at the same time. Some distributions like Alpine and Gentoo currently build jimtcl twice, once with and once without --shared, for this reason.

[msteveb]

It doesn't seem like a high priority to me. Should only be interesting to distributions and building twice shouldn't be a big deal there. But I will consider a suitable patch.

[msteveb]

I'm going to close this out. I will still accept a patch though if someone wants to implement it.