Merge branch 'parallel-tests-performance' into maint

* parallel-tests-performance:
  parallel-tests: separate different logs with an empty line

diff --combined lib/am/check.am
index 522c953,838766a..9cda82a
--- 1/lib/am/check.am
--- 2/lib/am/check.am
+++ b/lib/am/check.am
@@@ -18,27 -18,23 +18,27 @@@ am__tty_colors_dummy = 
    mgn= red= grn= lgn= blu= brg= std=; \
    am__color_tests=no
  if %?COLOR%
 -# If stdout is a non-dumb tty, use colors.  If test -t is not supported,
 -# then this fails; a conservative approach.  Of course do not redirect
 -# stdout here, just stderr.
 -am__tty_colors = \
 -$(am__tty_colors_dummy); \
 -test "X$(AM_COLOR_TESTS)" != Xno \
 -&& test "X$$TERM" != Xdumb \
 -&& { test "X$(AM_COLOR_TESTS)" = Xalways || test -t 1 2>/dev/null; } \
 -&& { \
 -  am__color_tests=yes; \
 -  red='\e[0;31m'; \
 -  grn='\e[0;32m'; \
 -  lgn='\e[1;32m'; \
 -  blu='\e[1;34m'; \
 -  mgn='\e[0;35m'; \
 -  brg='\e[1m'; \
 -  std='\e[m'; \
 +am__tty_colors = { \
 +  $(am__tty_colors_dummy); \
 +  if test "X$(AM_COLOR_TESTS)" = Xno; then \
 +    am__color_tests=no; \
 +  elif test "X$(AM_COLOR_TESTS)" = Xalways; then \
 +    am__color_tests=yes; \
 +## If stdout is a non-dumb tty, use colors.  If test -t is not supported,
 +## then this check fails; a conservative approach.  Of course do not
 +## redirect stdout here, just stderr.
 +  elif test "X$$TERM" != Xdumb && { test -t 1; } 2>/dev/null; then \
 +    am__color_tests=yes; \
 +  fi; \
 +  if test $$am__color_tests = yes; then \
 +    red='\e[0;31m'; \
 +    grn='\e[0;32m'; \
 +    lgn='\e[1;32m'; \
 +    blu='\e[1;34m'; \
 +    mgn='\e[0;35m'; \
 +    brg='\e[1m'; \
 +    std='\e[m'; \
 +  fi; \
  }
  else !%?COLOR%
  am__tty_colors = $(am__tty_colors_dummy)
@@@ -156,6 -152,7 +156,7 @@@ function rst_section(header) 
            fatal("failed to read from " $$0 ".log"); \
          print line; \
        }; \
+       printf "\n"; \
      }; \
  ## Don't leak open file descriptors, as this could cause serious
  ## problems when there are many tests (yes, even on Linux).
@@@ -189,12 -186,8 +190,12 @@@ $(am__sh_e_setup);                                       
  $(am__vpath_adj_setup) $(am__vpath_adj)                       \
  $(am__tty_colors);                                    \
  srcdir=$(srcdir); export srcdir;                      \
 -am__odir=`echo "./$@" | sed 's|/[^/]*$$||'`;          \
 -test "x$$am__odir" = x. || $(MKDIR_P) "$$am__odir" || exit $$?;       \
 +case "$@" in                                          \
 +  */*) am__odir=`echo "./$@" | sed 's|/[^/]*$$||'`;;  \
 +    *) am__odir=.;;                                   \
 +esac;                                                 \
 +test "x$$am__odir" = x"." || test -d "$$am__odir"     \
 +  || $(MKDIR_P) "$$am__odir" || exit $$?;             \
  if test -f "./$$f"; then dir=./;                      \
  elif test -f "$$f"; then dir=;                                \
  else dir="$(srcdir)/"; fi;                            \