allow version table to parse "" qualifer


git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@919369 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/sigil/common/osgi/src/org/apache/felix/sigil/common/osgi/VersionTable.java b/sigil/common/osgi/src/org/apache/felix/sigil/common/osgi/VersionTable.java
index 204439f..0cea80b 100644
--- a/sigil/common/osgi/src/org/apache/felix/sigil/common/osgi/VersionTable.java
+++ b/sigil/common/osgi/src/org/apache/felix/sigil/common/osgi/VersionTable.java
@@ -53,11 +53,10 @@
     public static Version getVersion(int major, int minor, int micro, String qualifier) {
         String key;
         
-        if ( qualifier == null ) {
+        if ( qualifier == null || qualifier.length() == 0 ) {
             key = major + "." + minor + "." + micro;
         }
         else {
-            assert qualifier.trim().length() > 0;
             key = major + "." + minor + "." + micro + "." + qualifier;            
         }