Fix 'cmp' in ARM assembler

- gnu dis is confusing:
  cmp r3, 1, 30 -> cmp r3, 1<<(32-30)
Implement 'swp' instruction in the ARM assembler
Implement 'movs' in ARM assembler
Fix #493 - Segfault in rafind2 with hex://
Do not install libr_tcc
Fix minstrlen issue with elf binaries and Cd -X
Fix for cmd_info test
Fix android dist name
Fix #494 - endless read when wt