Fix enum parsing from Config files

Change-Id: Ib0b86ceab070d46903de7b55f2fd441714855141

org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/ConfigTest.java

@@ -290,6 +290,9 @@ public class ConfigTest {
 
 		c = parse("[s \"b\"]\n\tc = one-two\n");
 		assertSame(TestEnum.ONE_TWO, c.getEnum("s", "b", "c", TestEnum.ONE_TWO));
+
+		c = parse("[s \"b\"]\n\tc = one two\n");
+		assertSame(TestEnum.ONE_TWO, c.getEnum("s", "b", "c", TestEnum.ONE_TWO));
 	}
 
 	@Test

org.eclipse.jgit/src/org/eclipse/jgit/lib/Config.java

@@ -387,7 +387,7 @@ public class Config {
 		if (value == null)
 			return defaultValue;
 
-		String n = value.replace('-', '_');
+		String n = value.replace('-', '_').replace(' ', '_');
 		T trueState = null;
 		T falseState = null;
 		for (T e : all) {