Complex sentence: The eventual maturity of this support meant that the name "ViewCVS" was no longer appropriate, which, combined with SourceForge's lack of support for Subversion at the time, led to the project being renamed "ViewVC" and moving to tigris.org.
Split into simpler sentences: The eventual maturity of this support meant that the name "ViewCVS" was no longer appropriate. This, combined with SourceForge's lack of support for Subversion at the time, led to the project being renamed "ViewVC" and moving to tigris.org.