Load automatic module names correctly

Load the Automatic-Module-Name manifest entry value if it's present (see
http://mail.openjdk.java.net/pipermail/jpms-spec-observers/2017-May/000877.html),
otherwise sanitize the name of the .jar file, throwing out all chars
except alphanumeric, duplicate dots and a version qualifier

compiler/testData/javaModules/automaticModuleNames/automatic-module1/m1/A.java

@@ -0,0 +1,3 @@
+package m1;
+
+public class A {}

compiler/testData/javaModules/automaticModuleNames/automatic-module2/m2/B.java

@@ -0,0 +1,3 @@
+package m2;
+
+public class B {}

compiler/testData/javaModules/automaticModuleNames/main.txt

@@ -0,0 +1 @@
+OK

compiler/testData/javaModules/automaticModuleNames/main/module-info.java

@@ -0,0 +1,4 @@
+module main {
+    requires auto.mat1c.m0d.ule;
+    requires automodule2;
+}

compiler/testData/javaModules/automaticModuleNames/main/usage.kt

@@ -0,0 +1,6 @@
+import m1.A
+import m2.B
+
+fun usage(): String {
+    return "${A()}${B()}"
+}