added vurpm-worker to AM_INSTALLCHECK_STD_OPTIONS_EXEMPT
vshelper: fixed path in shebang line

vshelper will be generated now
yum-chroot: added patch for rhel6.2 yum

untested atm...
release.mk: initial checkin

added 'dist-snapshot' target to create a tarball of current git
repository.  A strictly monotonic increasing version number will be
embedded into the generated ./configure script.

NOTE: setting this number in configure.ac is not possible because it
violates rules checked by 'make dist'.
vsysctl: fixed fd leak
Merge remote-tracking branch 'ensc/master'