refs #2656 Fixed translation key from Convex Hull geoprocess and his translation string to spanish.
Removes "Herramientas"
#1499 #1500 #1501 #1502 #1503 #1504 #1505
#663 No warning message to create a file which already exists in geoprocessing
gvSIG bugs #668 'Use extent from a layer' geoprocessing option does not work
Update headers to the last official version
Move help files to each geoprocess project.Create an algorithm provider for gvSIG geoprocesses.Use the i18n texts gvSIG API instead of the sextante one.
Add the gvSIG Association header
Rename some classes according to the gvSIG coding conventions
Initial basic API of a geoprocess library, and sextante based implementation.
Remove unused packages
Extract small API for gvSIG geoprocesses
Project rename and update to the API changes of the last build of the sextante library