added algorithm placeholder for Karel's qcrit

updated the Foreach_string macro to be more like other loops, i.e. the char* string is declared automatically.

updated some of the algorithm lists to include their description strings, and use these appropriately

updated the qcrit macros so they are available for general stellar types (not just GB) and are handled better as cmd-line macros

checked over the logic in the evolution splitting and how it handles the pre_event stardata struct: this seems to be ok