Pre-load key UNO mappings.

Change-Id: I415e07d737c734d63ac969783464babcbb9ea884
Reviewed-on: https://gerrit.libreoffice.org/48365Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Michael Meeks <michael.meeks@collabora.com>

cppuhelper/source/servicemanager.cxx

@@ -43,6 +43,7 @@
 #include <rtl/ustrbuf.hxx>
 #include <sal/log.hxx>
 #include <uno/environment.hxx>
+#include <uno/mapping.hxx>
 
 #include "loadsharedlibcomponentfactory.hxx"
 
@@ -1992,6 +1993,25 @@ void cppuhelper::ServiceManager::preloadImplementations() {
         }
     }
     std::cerr << std::endl;
+
+    // Various rather important uno mappings.
+    struct {
+        const char *mpFrom;
+        const char *mpTo;
+        const char *mpPurpose;
+    } aMappingLoad[] = {
+        { "gcc3", "uno",  "" },
+        { "uno",  "gcc3", "" },
+    };
+
+    static std::vector<css::uno::Mapping> maMaps;
+    for (auto &it : aMappingLoad)
+    {
+        maMaps.push_back(css::uno::Mapping(
+                             OUString::createFromAscii(it.mpFrom),
+                             OUString::createFromAscii(it.mpTo),
+                             OUString::createFromAscii(it.mpPurpose)));
+    }
 #endif
 }