hush: move testsuite files from hush-bugs to hush-parsing

(as these bugs are now fixed)

diff --git a/shell/hush_test/hush-bugs/argv0.right b/shell/hush_test/hush-parsing/argv0.right
similarity index 100%
rename from shell/hush_test/hush-bugs/argv0.right
rename to shell/hush_test/hush-parsing/argv0.right

diff --git a/shell/hush_test/hush-bugs/argv0.tests b/shell/hush_test/hush-parsing/argv0.tests
similarity index 100%
rename from shell/hush_test/hush-bugs/argv0.tests
rename to shell/hush_test/hush-parsing/argv0.tests

diff --git a/shell/hush_test/hush-bugs/quote2.right b/shell/hush_test/hush-parsing/quote2.right
similarity index 100%
rename from shell/hush_test/hush-bugs/quote2.right
rename to shell/hush_test/hush-parsing/quote2.right

diff --git a/shell/hush_test/hush-bugs/quote2.tests b/shell/hush_test/hush-parsing/quote2.tests
similarity index 100%
rename from shell/hush_test/hush-bugs/quote2.tests
rename to shell/hush_test/hush-parsing/quote2.tests