[PATCH v2] Replace hard-coded path with one from <paths.h>

[Chris Webb <chris@arachsys.com>]

In exec_cmd.c, git hard-codes a default path of /usr/local/bin:/usr/bin:/bin.
Get an appropriate value for the system from <paths.h> if possible instead.
Do not attempt to #include <paths.h> under Windows.

Signed-off-by: Chris Webb <chris@arachsys.com>
---
 exec_cmd.c        |    2 +-
 git-compat-util.h |    6 ++++++
 2 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/exec_cmd.c b/exec_cmd.c
index b2c07c7..bf22570 100644
--- a/exec_cmd.c
+++ b/exec_cmd.c
@@ -107,7 +107,7 @@ void setup_path(void)
 	if (old_path)
 		strbuf_addstr(&new_path, old_path);
 	else
-		strbuf_addstr(&new_path, "/usr/local/bin:/usr/bin:/bin");
+		strbuf_addstr(&new_path, _PATH_DEFPATH);
 
 	setenv("PATH", new_path.buf, 1);
 
diff --git a/git-compat-util.h b/git-compat-util.h
index 7e62b55..9443b9b 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -70,6 +70,8 @@
 #define WIN32_LEAN_AND_MEAN  /* stops windows.h including winsock.h */
 #include <winsock2.h>
 #include <windows.h>
+#else
+#include <paths.h>
 #endif
 
 #include <unistd.h>
@@ -164,6 +166,10 @@ extern char *gitbasename(char *);
 #define PATH_SEP ':'
 #endif
 
+#ifndef _PATH_DEFPATH
+#define _PATH_DEFPATH "/usr/local/bin:/usr/bin:/bin"
+#endif
+
 #ifndef STRIP_EXTENSION
 #define STRIP_EXTENSION ""
 #endif
-- 
1.7.0.3