Install postgresql-9.1-postgis-2.0-scripts in Travis due to packaging change of postgis
updated msautotest to latest branch-6-2 revision
solved symbol size trunc bug thanks to tbonfort
Merge pull request #4699 from luipir/branch-6-2

fix integer rounding on sld se:size (#4699)
printed color alpha value in map file
Add support for shapefiles with uppercase extension on Linux (#4712)
Merge pull request #4707 from luipir/branch-6-2

print color alpha value in map file writer
avoid rendering symbols with 0 scale (#4654)

sending in symbols with a 0 zero scale seems to mess up cairo, even
though our use of cairo_save/cairo_restore should have taken care
of this.
Merge branch 'branch-6-2'

Conflicts:
	.travis.yml
	mapfile.c
	msautotest
Merge branch 'master' of github.com:mapserver/mapserver