Linux-PAM: Version bumped to 1.1.8

 - New redhat patchset
 - New lunar patchset including automake 1.14 fixes
dmraid: not PSAFE
Linux-PAM: do not rebuild docs
Merge pull request #539 from Ratler/pam

Linux-PAM: Version bumped to 1.1.8
libusbx: import of replacement for unmaintained libusb
libusb-compat, usbutils: changed dep from libusb -> libusbx

Removed libusb module.
Merge pull request #541 from Ratler/libusbx

Switch from libusb to libusbx