Added a function, symbol-append.
Modularized  a gfora.scm.
Added a new file for error check of atlas.
Fixed a bug, all file names were accumulated.
Fixed a bug, Consider (% log close) pattern.
Modified code not to export slib format.
Add hook fixing. Slib-format is not used. So changed format argments.
Use slib through slib-wrapper.
Fixed a bug.
Modulized a tools.scm.