vchoi_fork

[svn-r4672] Purpose:
    Bug fix
Description:
    Snapshot does "make check" directly, instead of building all
    binary first.  This means it does not cover code that are not
    tested (e.g., example, perform).  (That explained why the errors
    in the PIO performance code were not reported in daily test but
    blew up when people built the library the "normal" way.)
    It is done this way so that the snaptest aborts as soon as
    the first test failed rather than after all code are compiled.
Solution:
    Add "make" (to build all binary) before "make check".
    The allows snaptest to fail as soon as the first compiling failure.
    If we wish the snaptest to abort on the first test failure, the two
    can be swapped as "make check && make ...".  (It would appear strange
    to run tests then make binary.)
Platforms tested:
    Would be tested in the daily test tonight.  (I should have tested
    it first but I started this commit process already.  Sorry.)