a few pan compile fixes

Hello folks,

The following are some fixes I had to make to get the lostcoder testing 
branch compiled on Fedora 13.

diff --git a/configure.in b/configure.in
index d54e93b..148a3a9 100644
--- a/configure.in
+++ b/configure.in
@@ -40,7 +40,7 @@ dnl GtkSpell is optional: GTKSPELL_REQUIRED refers to 
the minimum version
 dnl needed if you want to build Pan with spellchecking in the Post window.
 
 GLIB_REQUIRED=2.14.0
-GMIME_REQUIRED=2.4.0
+GMIME_REQUIRED=2.5.0
 GTK_REQUIRED=2.16.0
 GTKSPELL_REQUIRED=2.0.7
 AC_SUBST(GLIB_REQUIRED)
@@ -71,7 +71,7 @@ AM_GLIB_GNU_GETTEXT
 panlocaledir='${prefix}/${DATADIRNAME}/locale'
 
 AM_PATH_GLIB_2_0($GLIB_REQUIRED,,exit 1,gobject gmodule gthread)
-PKG_CHECK_MODULES(GMIME, gmime-2.4    >= $GMIME_REQUIRED)
+PKG_CHECK_MODULES(GMIME, gmime-2.6    >= $GMIME_REQUIRED)
 AM_PATH_GTK_2_0($GTK_REQUIRED,,exit 1,gthread)
 
 
diff --git a/pan/gui/body-pane.cc b/pan/gui/body-pane.cc
index 04a9ce3..7643e16 100644
--- a/pan/gui/body-pane.cc
+++ b/pan/gui/body-pane.cc
@@ -803,7 +803,7 @@ namespace
    * Generates a GtkPixmap object from a given GMimePart that contains an 
image.
    * Used for displaying attached pictures inline.
    */
-  GdkPixbuf* get_pixbuf_from_gmime_part (const GMimePart * part)
+  GdkPixbuf* get_pixbuf_from_gmime_part (GMimePart * part)
   {
     GdkPixbufLoader * l (gdk_pixbuf_loader_new ());
     GError * err (0);
diff --git a/pan/gui/post-ui.cc b/pan/gui/post-ui.cc
index 29d90d9..2a867f2 100644
--- a/pan/gui/post-ui.cc
+++ b/pan/gui/post-ui.cc
@@ -1544,7 +1544,7 @@ PostUI :: set_message (GMimeMessage * message)
   const char *name, *value;
   GMimeHeaderIter iter;
   
-  if (message->mime_part && g_mime_header_list_has_raw (message-
>mime_part->headers)) {
+  if (message->mime_part && g_mime_header_list_get_stream (message-
>mime_part->headers) != NULL) {
     if (g_mime_header_list_get_iter (message->mime_part->headers, &iter)) 
{
       do {
         value = g_mime_header_iter_get_value (&iter);
diff --git a/pan/usenet-utils/mime-utils.cc b/pan/usenet-utils/mime-
utils.cc
index 5d7bbab..621d161 100644
--- a/pan/usenet-utils/mime-utils.cc
+++ b/pan/usenet-utils/mime-utils.cc
@@ -1209,7 +1209,7 @@ namespace
 namespace
 {
   char *
-  pan_g_mime_part_get_content (const GMimePart *mime_part, size_t *len)
+  pan_g_mime_part_get_content (GMimePart *mime_part, size_t *len)
   {
     char *retval = NULL;