For github pull request #33 - GLEW version in glew.h

Allow for tools to extract the GLEW version from glew.h directly.
No functional change for C API.
See: https://github.com/nigels-com/glew/pull/33/files

auto/Makefile

@@ -143,8 +143,12 @@ $(I.DEST)/glew.h: $(EXT)/.dummy
 	$(BIN)/make_struct_var.pl GLEW_VAR_EXPORT $(GL_CORE_SPEC) $(GL_EXT_SPEC) >> $@
 	echo -e "\n#ifdef GLEW_MX\n}; /* GLEWContextStruct */\n#endif /* GLEW_MX */\n" >> $@
 	perl -e "s/GLEW_VAR_EXPORT GLboolean __GLEW_VERSION_1_2;/GLEW_VAR_EXPORT GLboolean __GLEW_VERSION_1_1;\nGLEW_VAR_EXPORT GLboolean __GLEW_VERSION_1_2;/" -pi $@
-	rm -f $@.bak
 	cat $(SRC)/glew_tail.h >> $@
+	perl -e "s/GLEW_VERSION_STRING/$(GLEW_VERSION)/g" -pi $@
+	perl -e "s/GLEW_VERSION_MAJOR_STRING/$(GLEW_MAJOR)/g" -pi $@
+	perl -e "s/GLEW_VERSION_MINOR_STRING/$(GLEW_MINOR)/g" -pi $@
+	perl -e "s/GLEW_VERSION_MICRO_STRING/$(GLEW_MICRO)/g" -pi $@
+	rm -f $@.bak
 
 $(I.DEST)/wglew.h: $(EXT)/.dummy
 	@echo "--------------------------------------------------------------------"

auto/src/glew_tail.h

@@ -13,6 +13,17 @@
 #define GLEW_VERSION_MINOR 3
 #define GLEW_VERSION_MICRO 4
 
+/* ------------------------------------------------------------------------- */
+
+/* GLEW version info */
+
+/*
+VERSION GLEW_VERSION_STRING
+VERSION_MAJOR GLEW_VERSION_MAJOR_STRING
+VERSION_MINOR GLEW_VERSION_MINOR_STRING
+VERSION_MICRO GLEW_VERSION_MICRO_STRING
+*/
+
 /* API */
 #ifdef GLEW_MX