Cleaned up a few poluting #defines.

Did some fg -> sg name space updating (lots more to do but we'll get there
  eventually)

simgear/math/Makefile.am

@@ -9,24 +9,25 @@ endif
 lib_LIBRARIES = libsgmath.a
 
 include_HEADERS = \
-	fg_geodesy.hxx \
 	fg_memory.h \
 	fg_random.h \
 	interpolater.hxx \
 	leastsqs.hxx \
+	localconsts.hxx \
 	point3d.hxx \
 	polar3d.hxx \
+	sg_geodesy.hxx \
 	sg_types.hxx \
 	vector.hxx
 
 EXTRA_DIST = linintp2.h linintp2.inl sphrintp.h sphrintp.inl
 
 libsgmath_a_SOURCES = \
-	fg_geodesy.cxx \
 	fg_random.c \
 	interpolater.cxx \
 	leastsqs.cxx \
 	polar3d.cxx \
+	sg_geodesy.cxx \
 	vector.cxx
 
 INCLUDES += -I$(top_srcdir) $(ZLIB_INCL)