fix owner of extracted files if you use a different user when launchi…

…ng the install.sh script.

before:
If you launch the script as foo, with sudo, extracted files owner is the one who create the archive.
after:
If you launch the script as foo, with sudo, and RTKBASE_USER is basegnss, extracted files owner is basegnss.

Fix #413 and fix #375

tools/install.sh

@@ -289,7 +289,7 @@ install_rtkbase_bundled() {
     ARCHIVE=$(awk '/^__ARCHIVE__/ {print NR + 1; exit 0; }' "${0}")
     # Check if there is some content after __ARCHIVE__ marker (more than 100 lines)
     [[ $(sed -n '/^__ARCHIVE__/,$p' "${0}" | wc -l) -lt 100 ]] && echo "RTKBASE isn't bundled inside install.sh. Please choose another source" && exit 1  
-    sudo -u "${RTKBASE_USER}" tail -n+${ARCHIVE} "${0}" | tar xpJv && \
+    sudo -u "${RTKBASE_USER}" tail -n+${ARCHIVE} "${0}" | sudo -u "${RTKBASE_USER}" tar xpJv && \
     _add_rtkbase_path_to_environment
 }