[patch] let gjdoc accept -source 1.[567]

[Matthias Klose <doko@ubuntu.com>]

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this patch is now in classpath trunk. the compiler does accept the newer -source
versions, so gjdoc should do as well (with a warning).

ok for the trunk?
ok for the 4.7 branch as well? it looks safe, as it only tries to accept the
option, and maybe bails out later. at least it helps with unmodified sources
which are now built with a newer -source option.

  Matthias

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# DP: Let gjdoc accept -source 1.5|1.6|1.7. Addresses: #678945.

--- a/src/libjava/classpath/tools/gnu/classpath/tools/gjdoc/Main.java
+++ b/src/libjava/classpath/tools/gnu/classpath/tools/gjdoc/Main.java
@@ -1337,12 +1337,17 @@
           void process(String[] args)
           {
             option_source = args[0];
-            if (!"1.2".equals(option_source)
+            if ("1.5".equals(option_source)
+                || "1.6".equals(option_source)
+                || "1.7".equals(option_source)) {
+              System.err.println("WARNING: support for option -source " + option_source + " is experimental");
+            }
+            else if (!"1.2".equals(option_source)
                 && !"1.3".equals(option_source)
                 && !"1.4".equals(option_source)) {
 
-              throw new RuntimeException("Only he following values are currently"
-                                         + " supported for option -source: 1.2, 1.3, 1.4.");
+              throw new RuntimeException("Only the following values are currently"
+                                         + " supported for option -source: 1.2, 1.3, 1.4; experimental: 1.5, 1.6, 1.7.");
             }
           }
         });