Add test cases for
(T1) STRBT reg+#imm8
(T1) STRHT reg+#imm8
(T1) LDRBT reg+#imm8
(T1) LDRSBT reg+#imm8

Pertaining to: 319858 319932 320083 321693 321148

(Vasily, w.golubev@mail.ru)



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13445 a5019735-40e9-0310-863c-91ae7b9d1cf9