Clean up BI Server build script.
Clean up BI Server build script.

 * Now expects first arg to be a directory containing unexploded BI
 * packages: server, report designer, metadata editor

 * Improves error checking

 * Generates new tarball for distribution

JayBoyer/new-trisano,JayBoyer/new-trisano,JayBoyer/new-trisano,JayBoyer/new-trisano,JayBoyer/new-trisano,JayBoyer/new-trisano,JayBoyer/new-trisano