Revert "I am tired of thesee assertions, put them behind dbglevel>2"

Nah, having them behind dbglevel>1 is fine (which already means these
assertions won't normally be compiled even with --enable-debug).

I got mislead as I was building with dbglevel=2 everywhere. But
pondering the point of dbglevel a.k.a. OSL_DEBUG_LEVEL, I think the
right way to see it is: You are not supposed to build all (or large
parts) of LibreOffice with dbglevel=2. If we used OSL_TRACE all over
the place as thoroughly as in some files in sal/rtl, that would lead
to astronomical amounts of tracing output. (We don't use OSL_TRACE
like that, but that is another thing...)

I think the intended use of dbglevel is that you should build with
dbglevel=2 only the small part of code you are currently actively
working on, when you want to see trace output.

Of course, another problem then is that in some modules and/or
libraries it might not be possible to compile just a part of the
sources with dbglevel=2. That should be fixed.

This reverts commit a3bad285.

cppu/source/typelib/typelib.cxx

@@ -338,7 +338,7 @@ TypeDescriptor_Init_Impl::~TypeDescriptor_Init_Impl() SAL_THROW( () )
         delete pWeakMap;
         pWeakMap = 0;
     }
-#if OSL_DEBUG_LEVEL > 2
+#if OSL_DEBUG_LEVEL > 1
     OSL_ENSURE( !nTypeDescriptionCount, "### nTypeDescriptionCount is not zero" );
     OSL_ENSURE( !nCompoundTypeDescriptionCount, "### nCompoundTypeDescriptionCount is not zero" );
     OSL_ENSURE( !nUnionTypeDescriptionCount, "### nUnionTypeDescriptionCount is not zero" );