gant: fix two bugs

reported by coverity:
- uninitialized r
- leaking fd
Merge branch 'master' of https://code.google.com/p/antpm
VS2012 build warning fix
fix more static analysis problems

from coverity
initialize members

from coverity
linux: look for usb_serial_simple too

for 0fcf:1009 that's the kernel module
tty debugging

print file permissions so we can easier figure what's going on
kfreebsd build fixes
travis-ci: don't run coverity with gcc