Stop copying upgrade minor from upgrade_prev

postgis_proc_upgrade should do the right thing

git-svn-id: http://svn.osgeo.org/postgis/trunk@12247 b70326c6-7e19-0410-871a-916f4a2858ee
Fix reference to website

git-svn-id: http://svn.osgeo.org/postgis/trunk@12248 b70326c6-7e19-0410-871a-916f4a2858ee
Fix build of unit tests with libtool 2.4.2

The error was:
undefined reference to symbol 'lround@@GLIBC_2.2.5'

For some reason -lm found in liblwgeom.la is not being taken
in consideration. See #2649

git-svn-id: http://svn.osgeo.org/postgis/trunk@12249 b70326c6-7e19-0410-871a-916f4a2858ee
Ignore new temporary raster upgrade files

git-svn-id: http://svn.osgeo.org/postgis/trunk@12250 b70326c6-7e19-0410-871a-916f4a2858ee
Simplify use of flags

git-svn-id: http://svn.osgeo.org/postgis/trunk@12251 b70326c6-7e19-0410-871a-916f4a2858ee
Fix cleaning rule

git-svn-id: http://svn.osgeo.org/postgis/trunk@12252 b70326c6-7e19-0410-871a-916f4a2858ee
Do not force drop of non-obsoleted aggregate signatures

git-svn-id: http://svn.osgeo.org/postgis/trunk@12253 b70326c6-7e19-0410-871a-916f4a2858ee