Added wmakePrintBuild for determining the build version

- the $WM_PROJECT_DIR/.build file is automatically updated.
  This file is (and must be) ignored by git.

wmake/rules/General/version

@@ -1,14 +1,10 @@
 .SUFFIXES: .Cver
 
 #
-# update version string from git, or just use the WM_PROJECT_VERSION
-# note: could also add --abbrev=32 for maximum resolution
+# update version string
 #
 Cvertoo = \
-    sed s/WM_PROJECT_VERSION/\"$(shell \
-        git describe --always --tags 2>/dev/null || \
-        echo $(WM_PROJECT_VERSION) \
-    )\"/ $$SOURCE > $*.C; \
+    sed s/WM_PROJECT_VERSION/\"$(shell wmakePrintBuild)\"/ $$SOURCE > $*.C; \
     $(CC) $(c++FLAGS) -c $*.C -o $@
 
 .Cver.dep: