Change 'post' to 'POST'

In rpm versioning, uppercase letters are 'older'.  Changing
'post' to 'POST' means that text based releases are likely
to supersede snapshot style builds.

buildcore.sh

@@ -173,8 +173,8 @@ fi
 
 function setversionvars {
     if [ ! -z "$USEGITVER" ]; then
-        VER=`git describe`
-        VER=${VER/-/.post}
+        VER=`git describe --tags`
+        VER=${VER/-/.POST}
         VER=${VER/-/.}
     else
         VER=`cat Version`

makegenesisbuilderrpm

@@ -1,6 +1,6 @@
 #!/bin/sh
-VER=`git describe`
-VER=${VER/-/.post}
+VER=`git describe --tags`
+VER=${VER/-/.POST}
 VER=${VER/-/.}
 rpmbuild --version > /dev/null
 if [ $? -gt 0 ]