SOVERSION bump needed?

[nieder]

In commit 1763633 (post v1.8.0), the SOVERSION for the libraries was set to 1. This matches the old versioning for v1.7.8 (autotools). However, many symbols seems to have been switched from C to C++. Because the symbols are now different, does that require that the SOVERSION be increased to 2 since the libraries are no longer truly backwards compatible?

[atzlinux]

I also support this suggestion.

In Debian, v1.7.8, SOVERSION is 1.1.0.

In v1.8.0, SOVERSION should update.