Android: Enable script to run single autotest

To make it easier to debug failures, adds the "testcase"
commandline option, which takes the name of the test to
run and then just runs this single test.

Change-Id: Ib202bb2a5dac889b6691f9c4d0620b3e0941cf3d
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>

tests/auto/android/runtests.pl

@@ -79,6 +79,7 @@ GetOptions('h|help' => \$help
             , 'ant=s' => \$ant_tool
             , 'strip=s' => \$strip_tool
             , 'readelf=s' => \$readelf_tool
+            , 'testcase=s' => \$testcase
             ) or pod2usage(2);
 pod2usage(1) if $help;
 pod2usage(-verbose => 2) if $man;
@@ -253,7 +254,14 @@ print "Building $tests_dir \n";
 system("make distclean") if ($make_clean);
 system("$qmake_path CONFIG-=QTDIR_build -r") == 0 or die "Can't run qmake\n"; #exec qmake
 system("make -j$jobs") == 0 or warn "Can't build all tests\n"; #exec make
-my $testsFiles=`find . -name libtst_*.so`; # only tests
+
+my $testsFiles = "";
+if ($testcase) {
+    $testsFiles=`find . -name libtst_$testcase.so`; # only tests
+} else {
+    $testsFiles=`find . -name libtst_*.so`; # only tests
+}
+
 foreach (split("\n",$testsFiles))
 {
     chomp; #remove white spaces