Add Jenkins builders for 0.4.3
Tor 0.4.3.x development now proceeds on its own branches (maint-0.4.3 and release-0.4.3); let's add them to Jenkins too.
Tor 0.4.3.x development now proceeds on its own branches (maint-0.4.3 and release-0.4.3); let's add them to Jenkins too.