Update build.bat to be in sync with build.sh

WARNING: dcd-server fails to build using both -O and -inline with message
"Internal error: backend\cgcod.c 1594" using DMD 2.066-b6 (same thing with
DMD 2.065).

Removing -O or -inline solve the problem.
Change -I path from "dscanner" to "libdparse/src"
Merge pull request #147 from gosella/windows-build

Update build.bat to be in sync with build.sh