New regtest features:
* -retest option (only rerun failed test dirs)
* numerical tolerances for test comparison may be defined in TEST_FILES
* replace old CVS with SVN
* improved documentation

(Marko Misic, PRACE)


git-svn-id: svn://svn.code.sf.net/p/cp2k/code/trunk@13071 bac0169d-1eea-4375-b5f6-f89d2ced9994