MM: export the SwDocShell mail merge via UNO

This saves the loading time for large document. Use it if you
want to present the generated document to the user or write a
mail merge unit tests.

This includes:
  * renaming "only" to "shell" at multiple occurences
  * dropping the DBMGR_MERGE_SINGLE_FILE special type for the mail
    merge wizard in favour of an additional SwMergeDescriptor
    boolean
  * cleanup and renaming of the internal merge type enums, so these
    actually  match the diffferent merge targets: printer, email,
    file and shell

Change-Id: I33c6773972195193687ba9c3e12b562310d330c1

2 files changed, 10 insertions, 0 deletions

diff --git a/offapi/com/sun/star/text/MailMergeType.idl b/offapi/com/sun/star/text/MailMergeType.idl
index 4c735320bd8c..7099a8dc7e84 100644
--- a/offapi/com/sun/star/text/MailMergeType.idl
+++ b/offapi/com/sun/star/text/MailMergeType.idl
@@ -45,6 +45,15 @@ published constants MailMergeType
      */
     const short MAIL = 3;
 
+
+    /** The output is a document shell.
+
+        The successful mail marge returns a XTextDocument based component.
+
+        @since LibreOffice 4.4
+     */
+    const short SHELL = 4;
+
 };
 
 
diff --git a/offapi/type_reference/offapi.idl b/offapi/type_reference/offapi.idl
index fc5b7953095f..fb4b93bb3e3e 100644
--- a/offapi/type_reference/offapi.idl
+++ b/offapi/type_reference/offapi.idl
@@ -14535,6 +14535,7 @@ module com {
      const short FILE = 2;
      const short MAIL = 3;
      const short PRINTER = 1;
+     const short SHELL = 4;
     };
     published service NumberingLevel {
      [property] short Adjust;