* gdb.disasm/mn10300.exp: Run mn10300 disassembler tests.
* gdb.disasm/Makefile.in: Remove "mn10300" when cleaning.
disassembler testsuite for the mn10300.
* gdb.disasm/sh3.exp: Run the sh3 disassembler tests.
* gdb.disasm/configure.in (sh-*-*): Use sh3.mt makefile fragment.
* gdb.disasm/sh3.mt: Makefile fragment for sh3 ests.
sh3e disassembler tests. Sanitized out for now.