Use <config.h>, not "config.h", per autoconf documentation.
* Makefile.cfg (local-checks-to-skip) [sc_require_config_h]: Enable.
* .x-sc_require_config_h: New file, to list exempted files.
* Makefile.am (EXTRA_DIST): Add .x-sc_require_config_h.
* src/stats_linux.c: Fix parsing of short interface names
occurring in the /proc/net/dev file.
* src/qemu_driver.c: Collect interface stats for QEMU & KVM
domains.
* src/stats_linux.c, src/stats_linux.h, src_xen_internal.c:
Abstract out the Linux-specific statistics. Fixed parsing
of 64 bit numbers.
* src/Makefile.am: Updated Makefile for new files.