moving some stuff around, getting ride of odd submodules

.gitmodules

set_env_vars

tests/Makefile

tests/bin_search/bin_search.du.sh

tests/bunzip2

tests/bzip2/data/compression_input1

tests/bzip2/data/decompression_input1

tests/bzip2/test_script.sh

tests/du/data/dir1/dir2/readme

tests/du/data/dir1/hello2

tests/du/data/dir1/yo2.xls

tests/du/data/hello1

tests/du/data/test.tar

tests/du/data/yo.txt

tests/du/test_script.sh

tests/egrep/data/data1.txt

tests/egrep/data/data2.txt

tests/egrep/data/khadafy.lines

tests/egrep/data/khadafy.regexp

tests/egrep/data/pattern