libcody: Fix for dash

[Nathan Sidwell]

Apparently 'var+=...' is not a dash thing.  Fixed thusly.

        * config.m4: Avoid non-dash idiom
        * configure: Rebuilt.

pushed (2 patches, because I didn't look carefully enough the first time)

--
Nathan Sidwell

diff --git i/libcody/config.m4 w/libcody/config.m4
index 364195a9f0b..0ae7b2665f0 100644
--- i/libcody/config.m4
+++ w/libcody/config.m4
@@ -35,7 +35,8 @@ if test "$tools" && test -d "$tools/lib" ; then
   if os=$(CXX -print-multi-os-directory 2>/dev/null) ; then
     toollib+="/${os}"
   fi
-  LDFLAGS+=" -L $toollib"
+  ## VAR+=... is not dashing
+  LDFLAGS="$LDFLAGS -L $toollib"
   unset toollib
 fi])
 
diff --git i/libcody/configure w/libcody/configure
index 35fd4e9db7e..8f22dd78134 100755
--- i/libcody/configure
+++ w/libcody/configure
@@ -2632,7 +2632,8 @@ if test "$tools" && test -d "$tools/lib" ; then
   if os=$(CXX -print-multi-os-directory 2>/dev/null) ; then
     toollib+="/${os}"
   fi
-  LDFLAGS+=" -L $toollib"
+  ## VAR+=... is not dashing
+  LDFLAGS="$LDFLAGS -L $toollib"
   unset toollib
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking adding -Wl,--no-undefined to linker" >&5

diff --git i/libcody/config.m4 w/libcody/config.m4
index 0ae7b2665f0..801cfbdb593 100644
--- i/libcody/config.m4
+++ w/libcody/config.m4
@@ -173,7 +173,7 @@ AC_SUBST(EXCEPTIONS)])
 AC_DEFUN([NMS_LINK_OPT],
 [AC_MSG_CHECKING([adding $1 to linker])
 ORIG_LDFLAGS="$LDFLAGS"
-LDFLAGS+=" $1"
+LDFLAGS="$LDFLAGS $1"
 AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
 [AC_MSG_RESULT([ok])],
 [LDFLAGS="$ORIG_LDFLAGS"
@@ -229,8 +229,8 @@ elif test "$withval" = "no" ; then
   AC_MSG_RESULT(installed)
 else
   AC_MSG_RESULT(${withval})
-  CPPFLAGS+=" -I${withval}/include"
-  LDFLAGS+=" -L${withval}/lib"
+  CPPFLAGS="$CPPFLAGS -I${withval}/include"
+  LDFLAGS="$LDFLAGS -L${withval}/lib"
 fi,
 AC_MSG_RESULT(installed))])
 
diff --git i/libcody/configure w/libcody/configure
index 8f22dd78134..1a119c59b9f 100755
--- i/libcody/configure
+++ w/libcody/configure
@@ -2639,7 +2639,7 @@ fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking adding -Wl,--no-undefined to linker" >&5
 $as_echo_n "checking adding -Wl,--no-undefined to linker... " >&6; }
 ORIG_LDFLAGS="$LDFLAGS"
-LDFLAGS+=" -Wl,--no-undefined"
+LDFLAGS="$LDFLAGS -Wl,--no-undefined"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */