Modify matchers to provude type information
Modify matchers to provude type information

There was lack of type information of matching values, so it
was hard to understand the matter of error message such as:
    "some string is some string"
Now it looks like%
    "string(some string) is Error(some string)"

Change-Id: I38e48b53629adfe91998429902101d73e9641c05

aandryashin/matchers