Fix pointer declaration. See #177

diff --git a/src/main/include/log4cxx/config/propertysetter.h b/src/main/include/log4cxx/config/propertysetter.h
index d49a1c7..072a327 100644
--- a/src/main/include/log4cxx/config/propertysetter.h
+++ b/src/main/include/log4cxx/config/propertysetter.h

@@ -26,10 +26,17 @@
 namespace helpers
 {
 class Object;
-// Instantiate template pointer type passed as parameter
-LOG4CXX_INSTANTIATE_EXPORTED_PTR(Object);
 LOG4CXX_PTR_DEF(Object);
+}
+}
 
+// Instantiate template pointer type passed as parameter
+LOG4CXX_INSTANTIATE_EXPORTED_PTR(LOG4CXX_NS::helpers::Object);
+
+namespace LOG4CXX_NS
+{
+namespace helpers
+{
 class Properties;
 class Pool;
 }

diff --git a/src/main/include/log4cxx/helpers/inputstreamreader.h b/src/main/include/log4cxx/helpers/inputstreamreader.h
index 5addcc9..822748a 100644
--- a/src/main/include/log4cxx/helpers/inputstreamreader.h
+++ b/src/main/include/log4cxx/helpers/inputstreamreader.h

@@ -22,16 +22,16 @@
 #include <log4cxx/helpers/inputstream.h>
 #include <log4cxx/helpers/charsetdecoder.h>
 
+// Instantiate template pointer types passed as parameters
+LOG4CXX_INSTANTIATE_EXPORTED_PTR(LOG4CXX_NS::helpers::InputStream);
+LOG4CXX_INSTANTIATE_EXPORTED_PTR(LOG4CXX_NS::helpers::CharsetDecoder);
+
 namespace LOG4CXX_NS
 {
 
 namespace helpers
 {
 
-// Instantiate template pointer types passed as parameters
-LOG4CXX_INSTANTIATE_EXPORTED_PTR(InputStream);
-LOG4CXX_INSTANTIATE_EXPORTED_PTR(CharsetDecoder);
-
 /**
  * Class for reading from character streams.
  * Decorates a byte based InputStream and provides appropriate

diff --git a/src/main/include/log4cxx/rolling/filterbasedtriggeringpolicy.h b/src/main/include/log4cxx/rolling/filterbasedtriggeringpolicy.h
index 8b4310f..de7b22f 100644
--- a/src/main/include/log4cxx/rolling/filterbasedtriggeringpolicy.h
+++ b/src/main/include/log4cxx/rolling/filterbasedtriggeringpolicy.h

@@ -21,6 +21,9 @@
 #include <log4cxx/rolling/triggeringpolicy.h>
 #include <log4cxx/spi/filter.h>
 
+// Instantiate template pointer types passed as parameters
+LOG4CXX_INSTANTIATE_EXPORTED_PTR(LOG4CXX_NS::spi::Filter);
+
 namespace LOG4CXX_NS
 {
 
@@ -35,9 +38,6 @@
 namespace rolling
 {
 
-// Instantiate template pointer types passed as parameters
-LOG4CXX_INSTANTIATE_EXPORTED_PTR(LOG4CXX_NS::spi::Filter);
-
 /**
  * FilterBasedTriggeringPolicy determines if rolling should be triggered
  * by evaluating the current message against a set of filters.  Unless a