Quote all calls to GIT_CONF_APPEND_LINE

Not quoting macro arguments that contain other macros is a big no-no in
Autoconf.  It can break at any time.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

configure.ac

@@ -39,30 +39,30 @@ AC_MSG_NOTICE([CHECKS for libraries])
 # Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
 AC_CHECK_LIB([ssl], [SHA1_Init],[],
 [AC_CHECK_LIB([crypto], [SHA1_INIT],
- GIT_CONF_APPEND_LINE(NEEDS_SSL_WITH_CRYPTO=YesPlease),
- GIT_CONF_APPEND_LINE(NO_OPENSSL=YesPlease))])
+ [GIT_CONF_APPEND_LINE(NEEDS_SSL_WITH_CRYPTO=YesPlease)],
+ [GIT_CONF_APPEND_LINE(NO_OPENSSL=YesPlease)])])
 #
 # Define NO_CURL if you do not have curl installed.  git-http-pull and
 # git-http-push are not built, and you cannot use http:// and https://
 # transports.
 AC_CHECK_LIB([curl], [curl_global_init],[],
-GIT_CONF_APPEND_LINE(NO_CURL=YesPlease))
+[GIT_CONF_APPEND_LINE(NO_CURL=YesPlease)])
 #
 # Define NO_EXPAT if you do not have expat installed.  git-http-push is
 # not built, and you cannot push using http:// and https:// transports.
 AC_CHECK_LIB([expat], [XML_ParserCreate],[],
-GIT_CONF_APPEND_LINE(NO_EXPAT=YesPlease))
+[GIT_CONF_APPEND_LINE(NO_EXPAT=YesPlease)])
 #
 # Define NEEDS_LIBICONV if linking with libc is not enough (Darwin).
 AC_CHECK_LIB([c], [iconv],[],
 [AC_CHECK_LIB([iconv],[iconv],
- GIT_CONF_APPEND_LINE(NEEDS_LIBICONV=YesPlease),[])])
+ [GIT_CONF_APPEND_LINE(NEEDS_LIBICONV=YesPlease)],[])])
 #
 # Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
 # Patrick Mauritz).
 AC_CHECK_LIB([c], [socket],[],
 [AC_CHECK_LIB([socket],[socket],
- GIT_CONF_APPEND_LINE(NEEDS_SOCKET=YesPlease),[])])
+ [GIT_CONF_APPEND_LINE(NEEDS_SOCKET=YesPlease)],[])])
 
 
 ## Checks for header files.
@@ -73,19 +73,19 @@ AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
 #
 # Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
 AC_CHECK_MEMBER(struct dirent.d_ino,[],
-GIT_CONF_APPEND_LINE(NO_D_INO_IN_DIRENT=YesPlease),
+[GIT_CONF_APPEND_LINE(NO_D_INO_IN_DIRENT=YesPlease)],
 [#include <dirent.h>])
 #
 # Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
 # d_type in struct dirent (latest Cygwin -- will be fixed soonish).
 AC_CHECK_MEMBER(struct dirent.d_type,[],
-GIT_CONF_APPEND_LINE(NO_D_TYPE_IN_DIRENT=YesPlease),
+[GIT_CONF_APPEND_LINE(NO_D_TYPE_IN_DIRENT=YesPlease)],
 [#include <dirent.h>])
 #
 # Define NO_SOCKADDR_STORAGE if your platform does not have struct
 # sockaddr_storage.
 AC_CHECK_TYPE(struct sockaddr_storage,[],
-GIT_CONF_APPEND_LINE(NO_SOCKADDR_STORAGE=YesPlease),
+[GIT_CONF_APPEND_LINE(NO_SOCKADDR_STORAGE=YesPlease)],
 [#include <netinet/in.h>])
 
 
@@ -95,15 +95,15 @@ AC_MSG_NOTICE([CHECKS for library functions])
 #
 # Define NO_STRCASESTR if you don't have strcasestr.
 AC_CHECK_FUNC(strcasestr,[],
-GIT_CONF_APPEND_LINE(NO_STRCASESTR=YesPlease))
+[GIT_CONF_APPEND_LINE(NO_STRCASESTR=YesPlease)])
 #
 # Define NO_STRLCPY if you don't have strlcpy.
 AC_CHECK_FUNC(strlcpy,[],
-GIT_CONF_APPEND_LINE(NO_STRLCPY=YesPlease))
+[GIT_CONF_APPEND_LINE(NO_STRLCPY=YesPlease)])
 #
 # Define NO_SETENV if you don't have setenv in the C library.
 AC_CHECK_FUNC(setenv,[],
-GIT_CONF_APPEND_LINE(NO_SETENV=YesPlease))
+[GIT_CONF_APPEND_LINE(NO_SETENV=YesPlease)])
 #
 # Define NO_MMAP if you want to avoid mmap.
 #