Restructured the GDAL-admin shell script so it has getPkgList and getPlatform functions.  This structure matches that of its Windows script counterpart, making it easier to compare them.
Restructured the GDAL-admin shell script so it has getPkgList and getPlatform functions.  This structure matches that of its Windows script counterpart, making it easier to compare them.

LANDIS-II-Foundation/Landis-Spatial-Modeling-Library