* elygame: added instanceupdates as dlopen library.
* Ely: panda3d_search.m4: removed includes' dependency from libraries'
checks.
*Ely: renamed panda3d_search.m4 to ely_deps_search.m4
*Ely: restructured Ely build dependency checks.
*Ely: configure.ac: some corrections.
*Ely: started libRocket integration.
*Ely: libRocket integration completed.