Reduce code duplication.
Simplify the error check.
Move few platform-specific definitions from FreeBSD header files to acfreebsd.h.
Use "uname -p" instead of "uname -m" to detect 64-bit processors on FreeBSD.
Fix binary installations for FreeBSD.
Also strip binaries and set mode by default.
Merge pull request #16 from juikim/master

AcpiDump: tidy up for FreeBSD