fix 'coverage' & add 'check' make-target

makefile_include.mk

@@ -116,10 +116,10 @@ endif
 
 # adjust coverage set
 ifneq ($(filter $(_ARCH), i386 i686 x86_64 amd64 ia64),)
-   COVERAGE = test_standalone timing
+   COVERAGE = test timing
    COVERAGE_APP = ./test && ./timing
 else
-   COVERAGE = test_standalone
+   COVERAGE = test
    COVERAGE_APP = ./test
 endif
 
@@ -135,6 +135,10 @@ LIBPATH  ?= $(PREFIX)/lib
 INCPATH  ?= $(PREFIX)/include
 DATAPATH ?= $(PREFIX)/share/doc/libtommath/pdf
 
+# build & run test-suite
+check: test
+	./test
+
 #make the code coverage of the library
 #
 coverage: LTM_CFLAGS += -fprofile-arcs -ftest-coverage -DTIMING_NO_LOGS