Add ins_pointer() to deal with potential size difference of LPC_INT and C pointer.

This will allow 32bit driver supporting 64bit LPC runtime.
Fix travis 32bit build/test.
Make 64bit LPC test default, print tests being run.
Merge pull request #39 from sunyc/i10-define-linux

Add ins_pointer() to deal with potential size difference of LPC_INT and C pointer.