test makefile overhaul

This introduces new test reporting infrastructure based on
gtester and gtester-report.

Also, all existing tests are moved to tests/, and tests/Makefile
is reorganized to factor out the commonalities in the rules.

Signed-off-by: Anthony Liguori <aliguori@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/rules.mak b/rules.mak
index 04a9198..c30093c 100644
--- a/rules.mak
+++ b/rules.mak
@@ -47,7 +47,7 @@
 cc-option = $(if $(shell $(CC) $1 $2 -S -o /dev/null -xc /dev/null \
               >/dev/null 2>&1 && echo OK), $2, $3)
 
-VPATH_SUFFIXES = %.c %.h %.S %.m %.mak %.texi
+VPATH_SUFFIXES = %.c %.h %.S %.m %.mak %.texi %.sh
 set-vpath = $(if $1,$(foreach PATTERN,$(VPATH_SUFFIXES),$(eval vpath $(PATTERN) $1)))
 
 # find-in-path