Sh esil implementation bugs fixed (#10334)

* Implemented ESIL for SH architecture
* fixed mov.l @(<disp>,PC), PC needed -2 offset, as program counter is already incremented
* deleted unused sdb file
* removed unnecessary variables and functions. Changed code for coding style rules. Added EXT.S instructions. head of file is still to be rewritten after I will finish tests.
* removed esil_sh_init()
* lots of bugs fixed during testing, not so much left
* Finished to check sh ESIL. Tests are written