svn - Revision 11376: /set-arithmetic/trunk

• ..
• Makefile
• abc
• abcd
• def
• defg
• difference.expected
• intersection.expected
• is-equal1.expected
• is-equal2.expected
• is-proper-subset1.expected
• is-proper-subset2.expected
• is-subset1.expected
• is-subset2.expected
• set-arithmetic
• symmetric-difference.expected
• union.expected