Add missing headers to panda/linmath (when doing non-composite builds).

panda/src/linmath/CMakeLists.txt

@@ -12,7 +12,7 @@ set(P3LINMATH_HEADERS
   lpoint2.h lpoint2_src.I lpoint2_src.h
   lpoint3.h lpoint3_src.I lpoint3_src.h
   lpoint4.h lpoint4_src.I lpoint4_src.h
-  lquaternion.h lquaternion_src.I lquaternion_src.cxx
+  lquaternion.h lquaternion_src.I
   lquaternion_src.h lrotation.h lrotation_src.I
   lrotation_src.h
   lsimpleMatrix.h lsimpleMatrix.I

panda/src/linmath/lvecBase2.h

@@ -23,6 +23,7 @@
 #include "checksumHashGenerator.h"
 #include "mathNumbers.h"
 #include "deg_2_rad.h"
+#include "lsimpleMatrix.h"
 
 #include "cmath.h"
 #include "nearly_zero.h"

panda/src/linmath/lvecBase4.h

@@ -21,6 +21,7 @@
 #include "datagram.h"
 #include "datagramIterator.h"
 #include "checksumHashGenerator.h"
+#include "lsimpleMatrix.h"
 
 #include "cmath.h"
 #include "nearly_zero.h"