mksysinfo: force Passwd.Pw_[ug]id from int32 to uint32

Solaris 10 uses int32 for the Pw_uid and Pw_gid fields of Passwd,
    but most systems, including Solaris 11, use uint32.  Force uint32
    for consistency and to fix the build.
    
    Reviewed-on: https://go-review.googlesource.com/88195

From-SVN: r256875

gcc/go/gofrontend/MERGE

@@ -1,4 +1,4 @@
-8195b62d353026256037fa44409c4ad95762e6b7
+bce8720d4eb662f31026e9c7be6ce4d0aeb4ae3b
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.

libgo/mksysinfo.sh

@@ -685,9 +685,13 @@ if ! grep "const EAI_OVERFLOW " ${OUT} >/dev/null 2>&1; then
 fi
 
 # The passwd struct.
+# Force uid and gid from int32 to uint32 for consistency; they are
+# int32 on Solaris 10 but uint32 everywhere else including Solaris 11.
 grep '^type _passwd ' gen-sysinfo.go | \
     sed -e 's/_passwd/Passwd/' \
       -e 's/ pw_/ Pw_/g' \
+      -e 's/ Pw_uid int32/ Pw_uid uint32/' \
+      -e 's/ Pw_gid int32/ Pw_gid uint32/' \
     >> ${OUT}
 
 # The group struct.