[PATCH 1/4] configure.ac: apply necessary quotes to result of macro expansion.

[Yousong Zhou]

This can fix the following error when searching for lzma support and
while at it also apply the practice to other uses of the same pattern.

	checking for lzma_code in -llzma... ./configure: line 4756: ac_fn_c_try_link: command not found

Signed-off-by: Yousong Zhou <yszhou4tech at gmail.com>
---
 configure.ac |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/configure.ac b/configure.ac
index db93331..c410e90 100644
--- a/configure.ac
+++ b/configure.ac
@@ -152,22 +152,22 @@ AC_CHECK_PROG([DIRNAME],  dirname,  dirname,  "no", [$PATH])
 dnl See if I have a usable copy of zlib available
 if test "$with_zlib" = yes ; then
 	AC_CHECK_HEADER(zlib.h,
-		AC_CHECK_LIB(z, inflateInit_, ,
-		AC_MSG_NOTICE([zlib support disabled])))
+		[AC_CHECK_LIB(z, inflateInit_, ,
+		AC_MSG_NOTICE([zlib support disabled]))])
 fi
 
 dnl See if I have a usable copy of lzma available
 if test "$with_lzma" = yes ; then
 	AC_CHECK_HEADER(lzma.h,
-		AC_CHECK_LIB(lzma, lzma_code, ,
-		AC_MSG_NOTICE([lzma support disabled])))
+		[AC_CHECK_LIB(lzma, lzma_code, ,
+		AC_MSG_NOTICE([lzma support disabled]))])
 fi
 
 dnl find Xen control stack libraries
 if test "$with_xen" = yes ; then
 	AC_CHECK_HEADER(xenctrl.h,
-		AC_CHECK_LIB(xenctrl, xc_kexec_load, ,
-		AC_MSG_NOTICE([Xen support disabled])))
+		[AC_CHECK_LIB(xenctrl, xc_kexec_load, ,
+		AC_MSG_NOTICE([Xen support disabled]))])
 fi
 
 dnl ---Sanity checks
-- 
1.7.10.4