Bump to version 5.0.3

NEWS

 ==================================================================================================
+Changes for 5.0.3
+==================================================================================================
+- Build models as a library with python interface for faster, easier testing on a workstation.  Run models on your laptop.
+- Detect errors in Simulink files that could lead to incorrect model behavior e.g. models wired to the wrong parts.
+- Handle multiple fast adcs (525 kHz) in one front end.
+- New Gaussian Noise part.
+- New combo Demodulation/Decimation parts.
+- Support new Dolphin PX reflected memory: PX allows more nodes and is available for purchase.
+- Duotone diagnostic check at nano-second resolution
+- LLO mid station timing info corrected when using LIGO timing card
+- Get rid of burt restore check
+- Timing error if GPS synch lost
+- Improved logging allows models to print debug messages while running.
+- Fixes bug in time_shift when a fast ADC is first ADC.
+- awgtpman will detect and connect with older interfaces.
+- Many subtle race conditions fixed.
+- Works on stock kernel.
+- Works with Debian 11 and Debian 10.
+- Simultaneous build of models.
+- Lots of code cleanup.
+- Build system is much cleaner and more rational.
+==================================================================================================
 Changes for 4.2.8
 ==================================================================================================
 - fixed issue where two testpoints couldn't be opened at the same time from the same model

src/include/rcgversion.h

@@ -3,7 +3,7 @@
 
 #define RCG_VERSION_MAJOR 5
 #define RCG_VERSION_MINOR 0
-#define RCG_VERSION_SUB 1
+#define RCG_VERSION_SUB 3
 
 // Set to 1 for release version, 0 for development version
 // When 0, causes version number to be displayed as negative on MEDM screens