postgis-legacy removal

[Andrea Venturoli]

Hello.

Today I found database/postgis (previously at version 1.5.3) was 
removed: this is no surprise, since the port was deprecated long ago.

However, there's PR/174764 with a patch to upgrade it to 1.5.8, so I'm 
wondering: was removing this really the best option?
Also consider 2.x is not source code compatible: application written for 
1.x need rewriting.

  bye
	av.