[Nut-upsdev] Makefile fix for tarball compilation

[Jim Klimov]

Hello all,

   I'm trying to compile the 2.6.5 tarball on a non-developer system
(a freshly installed OpenIndiana zone). Right away the make failed
due to revision checks (fixed below) due to missing git and svn
software (and for make, a failed step fails everything). The fix
is to catch the non-zero return codes and just successfully set
an empty string.

   Barring this, the default compilation (so far without CGI and
some drivers) seems to succeed.

###################

--- include/Makefile.orig       Mon Nov  4 13:12:39 2013
+++ include/Makefile    Mon Nov  4 13:23:02 2013
@@ -473,9 +473,11 @@
  # magic to include SVN revision number in NUT version string

  nut_version.h: FORCE
-       @GITREV=`git describe --tags 2>/dev/null | sed 
's/^v\([0-9]\)/\1/' `; \
+       @GITREV=`git describe --tags 2>/dev/null | sed 
's/^v\([0-9]\)/\1/' ` || \
+               GITREV=""; \
         if [ -z "$$GITREV" ]; \
-               then SVNREV=`LANG=C svnversion -n $(top_srcdir) 
2>/dev/null`; \
+               then SVNREV=`LANG=C svnversion -n $(top_srcdir) 
2>/dev/null` || \
+                       SVNREV=""; \
                 if [ -z "$$SVNREV" -o "$$SVNREV" = "exported" ]; \
                         then NUT_VERSION="$(PACKAGE_VERSION)"; \
                         else NUT_VERSION="$(PACKAGE_VERSION)-$$SVNREV"; \