git-compat-util.h: add FLOSS headers for HPE NonStop

The HPE NonStop (a.k.a. __TANDEM) platform cannot build git without
using the FLOSS package supplied by HPE. The convenient location
for including the relevant headers is in this file.

The NSIG define is also not defined on __TANDEM, so we define it
here as 100 if it is not defined only for __TANDEM builds.

Signed-off-by: Randall S. Becker <rsbecker@nexbridge.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-compat-util.h

@@ -397,6 +397,19 @@ static inline char *git_find_last_dir_sep(const char *path)
 #define query_user_email() NULL
 #endif
 
+#ifdef __TANDEM
+#include <floss.h(floss_execl,floss_execlp,floss_execv,floss_execvp)>
+#include <floss.h(floss_getpwuid)>
+#ifndef NSIG
+/*
+ * NonStop NSE and NSX do not provide NSIG. SIGGUARDIAN(99) is the highest
+ * known, by detective work using kill -l as a list is all signals
+ * instead of signal.h where it should be.
+ */
+# define NSIG 100
+#endif
+#endif
+
 #if defined(__HP_cc) && (__HP_cc >= 61000)
 #define NORETURN __attribute__((noreturn))
 #define NORETURN_PTR