Use POSIX complaint regex for gathering license information

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
Signed-off-by: Alexander Golubev <fatzer2@gmail.com>
(cherry picked from commit 623738e42c)

tde_show_license_info

@@ -11,7 +11,7 @@ if [ "$TDEDIR" = "" ] || [ "$TDEHOME" = "" ]; then
   exit 1
 fi
 
-RELEASE_MINOR_VERSION="$( ${TDEDIR}/bin/tde-config --version | sed -n  's|^TDE: \(R[0-9]\+\.[0-9]\+\)\.[0-9]\+[^0-9]*|\1|p' )"
+RELEASE_MINOR_VERSION="$( ${TDEDIR}/bin/tde-config --version | sed -n 's|^TDE: \(R[0-9]\{1,\}\.[0-9]\{1,\}\)\..*|\1|p' )"
 LICENSE_INFO="$( ${TDEDIR}/bin/kreadconfig --file ${TDEHOME}/share/config/kdeglobals --group "License Info" --key "${RELEASE_MINOR_VERSION}" )"
 
 if [ "$LICENSE_INFO" = "" ] || [ "$LICENSE_INFO" != "true" ]; then