Makefile.lite: Fix running of tests

* Generate `test/common.sh` from `test/common.sh.in`.
* Move `is_win` setting to `test_common.sh`.

test/Makefile.lite

@@ -27,6 +27,7 @@ DEFAULT_CONFIG = release
 CONFIG = $(DEFAULT_CONFIG)
 
 all: clean
+	sed 's|@top_srcdir@|$(topdir)|;s|@EXEEXT@| |' common.sh.in > common.sh
 	$(FLAC__TEST_LEVEL) $(FLAC__TEST_WITH_VALGRIND) ./test_libFLAC.sh $(CONFIG)
 	$(FLAC__TEST_LEVEL) $(FLAC__TEST_WITH_VALGRIND) ./test_libFLAC++.sh $(CONFIG)
 	$(FLAC__TEST_LEVEL) $(FLAC__TEST_WITH_VALGRIND) ./test_grabbag.sh $(CONFIG)

test/common.sh.in

@@ -50,6 +50,13 @@ EXE=@EXEEXT@
 top_srcdir=@top_srcdir@
 top_builddir=@top_builddir@
 
+# Set `is_win` variable which is used in other scripts that source this one.
+if test $(env | grep -ic '^comspec=') != 0 ; then
+	is_win=yes
+else
+	is_win=no
+fi
+
 # change to 'false' to show all flac/metaflac output (useful for debugging)
 if true ; then
 	SILENT='--silent'

test/test_flac.sh

@@ -58,12 +58,6 @@ md5cmp ()
 	[ "$n" != "" ] && [ $n = 1 ]
 }
 
-if [ `env | grep -ic '^comspec='` != 0 ] ; then
-	is_win=yes
-else
-	is_win=no
-fi
-
 echo "Checking for --ogg support in flac..."
 if flac${EXE} --ogg $TOTTALY_SILENT --force-raw-format --endian=little --sign=signed --channels=1 --bps=8 --sample-rate=44100 -c $0 1>/dev/null 2>&1 ; then
 	has_ogg=yes;

test/test_grabbag.sh

@@ -47,12 +47,6 @@ run_test_picture ()
 	fi
 }
 
-if [ `env | grep -ic '^comspec='` != 0 ] ; then
-	is_win=yes
-else
-	is_win=no
-fi
-
 ########################################################################
 #
 # test_picture