History:

==> 2011-11-11	
Version 1.0.11-11: to initialize the package, and collect some commonly used algorithms.
11/15/2011: GLD, GBD functions. GBD fitting with ML method and GLD with MoM.
11/16/2011: rename package to gb.  Cheange GBD to egld. 
  Add GLD MoP and LMoM.
  Add function gboot.  
  Add dependency of 'boot' package.
11/18/2011: change package title, and update Rd files.