Unitests update

-unittest runner works for non betterC build
-working unittest coverage generation
-unittest runner support for named tests. Simple regex is supported (* as any substring) and two list of expressions are used, one for include regex and one for exclude regex

dub.json

@@ -38,6 +38,33 @@
 				"-op"
 			]
 		},
+		{
+			"name": "unittest-runner",
+			"targetType" : "executable",
+			"sourcePaths": ["source/","tests/"],
+			"mainSourceFile":"tests/runner.d",
+			"excludedSourceFiles":[
+				"source\/win_dll.d",
+				"tests/tests.d"
+			],
+			"dflags": [
+				"-unittest"
+			]
+		},
+		{
+			"name": "unittest-runner-cov",
+			"targetType" : "executable",
+			"sourcePaths": ["source/","tests/"],
+			"mainSourceFile":"tests/runner.d",
+			"excludedSourceFiles":[
+				"source\/win_dll.d",
+				"tests/tests.d"
+			],
+			"dflags": [
+				"-unittest",
+				"-cov"
+			]
+		},
 		{
 			"name" : "library-betterC",
 			"targetType" : "library",
@@ -84,12 +111,12 @@
 				"-lpthread"
 			]
 		},
-
 		{
-			"name": "unittest-runner",
+			"name": "unittest-runner-betterC",
 			"targetType" : "executable",
 			"dflags": [
-				"-betterC"
+				"-betterC",
+				"-unittest"
 			],
 			"sourcePaths": ["source/","tests/"],
 			"mainSourceFile":"tests/runner.d",