common: fix run tests by superuser
vmem: fix dependencies on jemalloc library

Automatically rebuild libjemalloc and libvmem in case of any change
in jemalloc source code.
Merge pull request #94 from krzycz/vmem-jemalloc_dep

vmem: fix dependencies on jemalloc library
common: link to libpthread
Merge pull request #93 from spawlows/common-util-fix-tests-by-root

common: fix run tests by superuser
Merge pull request #92 from krzycz/common-libpthread

common: link to libpthread