general: Fix missing includes.

panda/src/particlesystem/colorInterpolationManager.cxx

@@ -11,6 +11,7 @@
  * @date 2005-06-02
  */
 
+#include "colorInterpolationManager.h"
 #include "mathNumbers.h"
 
 TypeHandle ColorInterpolationFunction::_type_handle;

panda/src/pnmtext/pnmTextMaker.cxx

@@ -16,6 +16,8 @@
 #include "filename.h"
 #include "pnmImage.h"
 
+#include FT_OUTLINE_H
+
 /**
  * The constructor expects the name of some font file that FreeType can read,
  * along with face_index, indicating which font within the file to load

panda/src/text/dynamicTextFont.cxx

@@ -42,6 +42,7 @@
 // #include "renderModeAttrib.h" #include "antialiasAttrib.h"
 #include "colorAttrib.h"
 #include "textureAttrib.h"
+#include "transparencyAttrib.h"
 
 TypeHandle DynamicTextFont::_type_handle;