Fix #100: Segmentation fault if rows_per_wal = 1
Fix #99: Salloc initialization is not checked on startup
Add a workaround for #49: salloc_index_to_ptr is broken
hp-fedora-fix: update download page with Fedora repository link.
Make gh-100 test case build directory independent.
gh-93: tarantar segfault due to uninitialized value access, closes #93.
Merge branch 'stable' into gh-100-rows-per-val

Conflicts:
	test/box/configuration.result
	test/box/configuration.test
Merge remote-tracking branch 'origin/gh-93' into stable
Merge remote-tracking branch 'origin/workaround-for-bitset' into stable
Merge branch 'stable' of https://github.com/tarantool/tarantool into stable