#2193 integrate pagc in extension (loads helper tables) and also upgrade and create scripts, modify tables some more.  Still need to put in another folder with c files for compile and in manual on how to enable.

git-svn-id: http://svn.osgeo.org/postgis/trunk@11244 b70326c6-7e19-0410-871a-916f4a2858ee
#2193: get rid of redundant call.

git-svn-id: http://svn.osgeo.org/postgis/trunk@11245 b70326c6-7e19-0410-871a-916f4a2858ee