adjust header order in nudgesig.c
adjust header order in nudgesig.c

This CL moves "configure.h" to be the first header file to make sure
all defines are visible to all other headers.

Review-URL: https://codereview.appspot.com/229050043

AmesianX/dynamorio,daksunt/dynamorio,bl4ckic3/dynamorio,bl4ckic3/dynamorio,daksunt/dynamorio,bl4ckic3/dynamorio,daksunt/dynamorio,AmesianX/dynamorio,bl4ckic3/dynamorio,code4bones/dynamorio,AmesianX/dynamorio,code4bones/dynamorio,AmesianX/dynamorio,AmesianX/dynamorio,daksunt/dynamorio,code4bones/dynamorio,code4bones/dynamorio,daksunt/dynamorio,code4bones/dynamorio,bl4ckic3/dynamorio