Fixes gh-37: print(64-bit number) adds extra newline

A copy-paste implementation of print(64 bit number)
used to add an extra newline at the end of printed string.
Merge branch 'stable'

Conflicts:
	src/lua/init.cc
	test/box/lua.result
	test/box/lua.test
Add a test case for gh-37 (print of 64-bit number adds extra newline)