Relocate tests/ -> test/

For my own sanity, test/ is used in every other project of mine.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

test/Makefile.am

@@ -0,0 +1,16 @@
+EXTRA_DIST      = check.h
+CLEANFILES      = *~ *.trs *.log
+
+TESTS           =
+TESTS          += active
+TESTS          += api
+TESTS          += complete
+TESTS          += cronrun
+TESTS          += signal
+TESTS          += timer
+TESTS          += event
+
+check_PROGRAMS  = $(TESTS)
+
+CPPFLAGS        = -D_GNU_SOURCE
+LDADD           = -L../src ../src/libuev.la